Notable Deaths on June 27

Marie-Sophie Germain was a French mathematician, physicist, and philosopher. Despite initial opposition from her parents and difficulties presented by society, she gained education from books in her father's library, including ones by Euler, and from correspondence under the pseudonym of Monsieur Le Blanc with famous mathematicians, such as Lagrange, Legendre, and Gauss. One of the pioneers of elasticity theory, she won the grand prize from the Paris Academy of Sciences for her essay on the subject. Her work on Fermat's Last Theorem provided a foundation for mathematicians exploring the subject for hundreds of years after. Because of prejudice against her sex, she was unable to make a career out of mathematics, but she worked independently throughout her life. Before her death, Gauss had recommended that she be awarded an honorary degree, but that never happened. On 27 June 1831, she died from breast cancer. Following the publication of a biography in the late 1870s marking the centenary of her life, a street and a girls' school were named after her. The Academy of Sciences established the Sophie Germain Prize in her honour.

Leutnant Karl Allmenröder was a German World War I flying ace credited with 30 aerial victories. The medical student son of a preacher father was seasoned in the trenches as an 18-year-old artilleryman in the early days of the First World War, earning promotion via battlefield commission to Leutnant on 30 March 1915. After transferring to aviation and serving some time as an artillery spotter in two-seater reconnaissance airplanes, he transferred to flying fighter aircraft with Jagdstaffel 11 in November 1916. As Manfred von Richthofen's protege, Karl Allmenröder scored the first of his 30 confirmed victories on 16 February 1917. Flying a scarlet Albatros D.III trimmed out with white nose and elevators, Allmenröder would score a constant string of aerial victories until 26 June 1917, the day before his death. On 27 June 1917, Karl Allmenröder was shot down near Zillebeke, Belgium. His posthumous legacy of patriotic courage would later be abused as propaganda by the Nazis.

Georgios Papadopoulos was a Greek military officer and dictator who ruled Greece from 1967 to 1973. He led the military junta that overthrew Prime Minister Panagiotis Kanellopoulos in 1967 and established his dictatorship. He was proclaimed Prime Minister of Greece from 1967 and served until 1973. He was elected President of Greece under the junta in June 1973, following a referendum. However, after causing a massacre by deploying military riflemen and a tank brigade to attack non-violent protestors to suppress the Athens Polytechnic uprising, he was overthrown by hardliner Dimitrios Ioannidis, in a string of events that would culminate in the fall of regime in 1974. His dictatorship's legacy, as well as its methods he constructed and effects on Greek economy and society as a whole, are still fiercely debated.

Alfonso the Magnanimous was King of Aragon and King of Sicily and the ruler of the Crown of Aragon from 1416 and King of Naples from 1442 until his death. He was involved with struggles to the throne of the Kingdom of Naples with Louis III of Anjou, Joanna II of Naples and their supporters, but ultimately failed and lost Naples in 1424. He recaptured it in 1442 and was crowned king of Naples. He had good relations with his vassal, Stjepan Kosača, and his ally, Skanderbeg, providing assistance in their struggles in the Balkans. He led diplomatic contacts with the Ethiopian Empire and was a prominent political figure of the early Renaissance, being a supporter of literature as well as commissioning several constructions for the Castel Nuovo.

Élisabeth Claude Jacquet de La Guerre was a French musician, harpsichordist and composer. Jacquet de La Guerre was a significant figure in French Baroque music, particularly in the development of cantata and keyboard traditions. She was one of the earliest women in France to achieve recognition as a composer and to have her works widely performed and published. She was among the first French composers to write cantatas, helping establish the genre in France. She was closely associated with the court of Louis XIV, where her career was shaped by royal patronage and the musical culture of Versailles. Her music blends French stylistic traditions with elements of Italian influence, particularly in her vocal and instrumental works.

Harry Pollitt was a British communist who served as the General Secretary of the Communist Party of Great Britain (CPGB) from July 1929 to September 1939 and again from 1941 until his death in 1960. Pollitt spent most of his life advocating communism. Ideologically a Marxist–Leninist, Pollitt was an adherent particularly of Joseph Stalin even after Stalin's death and rise of Nikita Khrushchev. Pollitt's acts included opposition to the Allied intervention in the Russian Civil War and Polish–Soviet War, support for the Spanish Republicans during the Spanish Civil War, both support for and opposition to the war against Nazi Germany, defence of the communist coup in Czechoslovakia, and support for the 1956 Soviet invasion of Hungary.

Konstantin Pavlovich was a grand duke of Russia and the second son of Emperor Paul I and Sophie Dorothea of Württemberg. He was the heir presumptive for most of his elder brother Alexander I's reign, but had secretly renounced his claim to the throne in 1823. For 25 days after the death of Alexander I; from 19 November (O.S.)/1 December to 14 December (O.S.)/26 December 1825, he was known as His Imperial Majesty Konstantin I Emperor and Sovereign of Russia, although he never reigned and never acceded to the throne. His younger brother Nicholas became tsar in 1825. The succession controversy became the pretext of the Decembrist revolt.

Harold Segerson Mahony was a Scottish-born Irish tennis player who is best known for winning the singles title at the Wimbledon Championships in 1896. His career lasted from 1888 until his death in 1905. Mahony was born in Scotland but lived in Ireland for the majority of his life; his family were Irish including both of his parents, the family home was in County Kerry, Southwestern Ireland. He was the last Scottish born man to win Wimbledon until the victory of Andy Murray at the 2013 championships. He remains the most recent Irish singles champion at the All England Club.

Albert Romolo Broccoli, nicknamed "Cubby", was an American film producer who made more than 40 motion pictures throughout his career. Most of the films were made in the United Kingdom and often filmed at Pinewood Studios. Co-founder of Danjaq, LLC and Eon Productions, Broccoli is most notable as the producer of many of the James Bond films. He and Harry Saltzman saw the films develop from relatively low-budget origins to large-budget, high-grossing extravaganzas. Broccoli's heirs Barbara Broccoli and Michael G. Wilson continued to produce new Bond films until 2025 when the franchise rights were sold to Amazon.

Francis Sydney Smythe, better known as Frank Smythe or F. S. Smythe, was an English mountaineer, author, photographer and botanist. He is best remembered for his mountaineering in the Alps as well as in the Himalayas, where he identified a region that he named the "Valley of Flowers", now a protected park. His ascents include two new routes on the Brenva Face of Mont Blanc, Kamet, and attempts on Kangchenjunga and Mount Everest in the 1930s. It was said that he had a tendency for irascibility, something some of his mountaineering contemporaries said "decreased with altitude".

Wanda Hazel Gág was an American artist, author, translator, and illustrator. She is best known for writing and illustrating the children's book Millions of Cats, the oldest American picture book still in print. Gág was also a noted print-maker, receiving international recognition and awards. Growing Pains, a book of excerpts from the diaries of her teen and young adult years, received widespread critical acclaim. Two of her books were awarded Newbery Honors and two received Caldecott Honors. The New York Public Library included Millions of Cats on its 2013 list of 100 Great Children's Books.

George Nēpia was a New Zealand Māori rugby union and rugby league player. He is remembered as an exceptional full-back and one of the most famous Māori rugby players. He was inducted into the New Zealand Sports Hall of Fame in 1990. In 2004 he was selected as number 65 by the panel of the New Zealand's Top 100 History Makers television show. Nēpia was featured in a set of postage stamps from the New Zealand post office in 1990. Historian Philippa Mein Smith described him as "New Zealand rugby's first superstar".

Tove Marika Jansson was a Finland-Swedish author, novelist and comic strip author, painter and illustrator. Brought up by artistic parents, her mother an illustrator and postage stamp designer, her father a sculptor, Jansson studied art from 1930 to 1938 in Helsinki, Stockholm, and Paris. She held her first solo art exhibition in 1943. Over the same period, she penned short stories and articles for publication, and subsequently drew illustrations for book covers, advertisements, and postcards. She continued her work as an artist and writer for the rest of her life.

Martin Eugene Mull was an American painter, actor, and comedian. Mull gained early notoriety on Mary Hartman, Mary Hartman, and the parody talk-show spin-offs Fernwood 2 Night and America 2 Night. Other notable roles included Colonel Mustard in the 1985 film Clue, Leon Carp on Roseanne, Willard Kraft on Sabrina the Teenage Witch, Vlad Masters/Vlad Plasmius on Danny Phantom, Gene Parmesan on Arrested Development, and his recurring role as drug-addled pharmacist Russell on Two and a Half Men. The retrospective documentary Who is Martin Mull? was released in 2026.

John Uhler Lemmon III was an American actor. Considered proficient in both dramatic and comic roles, he was known for his anxious, middle-class everyman screen persona in comedy-drama films. He received numerous accolades including two Academy Awards, five Golden Globe Awards, three BAFTA Awards, two Primetime Emmy Awards and one Volpi Cup. He also received the AFI Life Achievement Award in 1988, the Cecil B. DeMille Award in 1991, and the Kennedy Center Honors in 1996. The Guardian labeled him as "the most successful tragi-comedian of his age".

Floris V reigned as Count of Holland and Zeeland from 1256 until 1296. His life was documented in detail in the Rijmkroniek by Melis Stoke, his chronicler. He is credited with a mostly peaceful reign, modernizing administration, policies beneficial to trade, generally acting in the interests of his peasants at the expense of nobility, and reclaiming land from the sea. His dramatic murder, said by some to have been arranged by King Edward I of England and Guy, Count of Flanders, made him a hero in Holland.

Ida Mett (1901–1973) was a Belarusian anarcho-syndicalist, physician and writer. Following her experiences in the Russian Revolution, she fled into exile in France, where she collaborated with other exiled revolutionary anarchists on the Delo truda magazine and the constitution of platformism. She then went on to participate in the anarcho-syndicalist movements in Belgium, Spain and France, before repression by the fascist Vichy regime forced her to cease her activities. She spent the final decades of her life working as a nurse and publishing history books.

Date Masamune was a Japanese samurai and daimyō during the Azuchi–Momoyama period through the early Edo period. Heir to a long line of powerful feudal lords in the Tōhoku region, he went on to found the modern-day city of Sendai. An outstanding tactician, he was made all the more iconic for his missing eye, as Masamune was often called dokuganryū (独眼竜), or the "One-Eyed Dragon of Ōshū". As a legendary warrior and leader, Masamune is a character in a number of Japanese period dramas.

John Alec Entwistle was an English singer, songwriter, musician, composer and record producer, best known as the bass guitarist for the rock band the Who. Entwistle's music career spanned over four decades. Nicknamed "The Ox" and "Thunderfingers", he was the band's only member with formal musical training, and also provided backing and occasional lead vocals plus some French horn or trumpet. Entwistle was inducted into the Rock and Roll Hall of Fame as a member of the Who in 1990.

Joseph Smith Jr. was an American religious and political leader and the founder of Mormonism and the Latter Day Saint movement. Publishing the Book of Mormon at the age of 24, Smith attracted tens of thousands of followers by the time of his death fourteen years later. The religious movement he founded is followed by millions of global adherents and several churches, the largest of which is the Church of Jesus Christ of Latter-day Saints.

Giorgio Vasari was an Italian Renaissance painter, architect, art historian, and biographer known for his work Lives of the Most Excellent Painters, Sculptors, and Architects, considered the ideological foundation of Western art-historical writing, and still much cited in modern biographies of the many Italian Renaissance artists he covers, including Leonardo da Vinci and Michelangelo, although he is since regarded as including many factual errors, especially when covering artists from before he was born.

Josephine Owaissa Cottle, known professionally as Gale Storm, was an American actress and singer. After a film career from 1940 to 1952, she starred in two popular television programs of the 1950s, My Little Margie and The Gale Storm Show. Six of her songs were top ten hits. Storm's greatest recording success was a cover version of "I Hear You Knockin'," which hit No. 2 on the Billboard Hot 100 chart in 1955.

Sancho Garcés VI, called the Wise was King of Navarre from 1150 until his death in 1194. He was the first monarch to officially drop the title of King of Pamplona in favour of King of Navarre, thus changing the designation of his kingdom. Sancho Garcés was responsible for bringing his kingdom into the political orbit of Europe. He was the eldest son of García Ramírez, the Restorer and Margaret of L'Aigle.

Stefano Borgonovo was an Italian footballer and manager, who played as a striker. An opportunistic striker, Borgonovo played for several Italian clubs throughout his career, and came to prominence while playing alongside Roberto Baggio with Fiorentina during the 1988–89 season, on loan from Milan. His prolific performances with Fiorentina earned him a permanent move to Milan, where he contributed to the club's European Cup victory in 1990, despite struggling with injuries.

Wenzel Anton, Prince of Kaunitz-Rietberg was an Austrian and Czech diplomat and statesman in the Habsburg monarchy. A proponent of enlightened absolutism, he held the office of State Chancellor for about four decades and was responsible for the foreign policies during the reigns of Maria Theresa, Joseph II, and Leopold II. In 1764, he was elevated to the noble rank of a Prince of the Holy Roman Empire (Reichfürst).

Angel Maturino Reséndiz, known as The Railroad Killer, was a Mexican serial killer suspected in as many as 23 murders across the United States and Mexico during the 1990s, some of which involved sexual assault. He had become known as "The Railroad Killer", as most of his crimes were committed near railroads, where he had jumped off the trains which he was using to travel.

Victor John Surridge was an English motor-cycle racer who raced for the Rudge team. After the works Rudge factory team visited the Isle of Man TT Races for the first time, Surridge, while practicing for the 1911 Isle of Man TT Races, was killed on the Glen Helen section on the new Isle of Man TT Mountain Course used for the first-time in 1911.

Rachid Solh was a Lebanese lawyer and politician who served twice as prime minister of Lebanon from 1974 to 1975 and from May to October 1992. He belonged to the prominent Solh family, a Sunni Muslim family originally from Sidon whose members played significant roles in Lebanese politics, including several who served as prime minister. The family later transferred its civil registration to Beirut.

Ranjit Singh was the founder and the first maharaja of the Sikh Empire, ruling from 1801 until his death in 1839. Starting as a local chieftain, by the time of his death he had expanded his kingdom from Ladakh in the north to the borders of Sindh, and from Khyber Pass in the west to the river Sutlej in the east.

Field Marshal Sam Hormusji Framji Jamshedji Manekshaw,, nicknamed as Sam Bahadur, was an Indian Army general officer who was the Chief of the army staff during the India–Pakistan war of 1971, and the first Indian army officer to be promoted to the rank of field marshal. His active military career spanned four decades, beginning with service in World War II.

Sidney Breese, a lawyer, soldier, author and jurist born in New York, became an early Illinois pioneer and represented the state in the United States Senate as well as served as Chief Justice of the Illinois Supreme Court and Speaker of the Illinois House of Representatives, and has been called "father of the Illinois Central Railroad".

Sir Geoffrey Ingram Taylor OM FRS FRSE was a British physicist, who made major contributions to fluid dynamics and wave theory. Many phenomena of fluid motion are named after him. He is also known for his accurate calculations of the yield of the Trinity nuclear test, based on mathematical modelling and data from photographs.

Hyrum Smith was an American religious leader in the Church of Jesus Christ of Latter Day Saints, the original church of the Latter Day Saint movement. He was the older brother of the movement's founder, Joseph Smith, and was killed with his brother at Carthage Jail where they were being held awaiting trial.

William Ian DeWitt Hutt, was a Canadian actor of stage, television and film. Hutt's distinguished career spanned over 50 years and won him many accolades and awards. While his base throughout his career remained at the Stratford Festival in Stratford, Ontario, he appeared on the stage in London, New York and across Canada.

Elizabeth Cabot Agassiz was an American educator, naturalist, writer, and the co-founder and first president of Radcliffe College. A researcher of natural history, she was an author and illustrator of natural history texts as well as a co-author of natural history texts with her husband, Louis Agassiz, and her stepson Alexander Agassiz.

Christopher Russell Edward Squire was an English musician, singer and songwriter best known as the bassist, backing vocalist, and only constant member of the progressive rock band Yes until his death in 2015. In 2017, he was posthumously inducted into the Rock and Roll Hall of Fame as a member of Yes.

Corey Allen was an American film and television director, writer, producer, and actor. He began his career as an actor but eventually became a television director. He is best known for playing the character Buzz Gunderson in Nicholas Ray's Rebel Without a Cause (1955). He was the son of Carl Cohen.

Leslie François Saint Roc Manigat was a Haitian politician who was elected as President of Haiti in a tightly controlled military held election in January 1988. He served as President for only a few months, from February 1988 to June 1988, before being ousted by the military in a coup d'état.

James Smithson was a British chemist and mineralogist. He published numerous scientific papers for the Royal Society during the early 1800s as well as defining calamine, which would eventually be renamed after him as "smithsonite". He was the founding donor of the Smithsonian Institution, which also bears his name.

Max Wilhelm Dehn was a German mathematician most famous for his work in geometry, topology and geometric group theory. Dehn's early life and career took place in Germany. However, he was forced to retire in 1935 and eventually fled Germany in 1939 and emigrated to the United States.

Hermann Buhl was an Austrian mountaineer. His accomplishments include the first ascents of Nanga Parbat in 1953 and Broad Peak in 1957. He was one of the pioneers of the alpine style. Buhl was the father of Austrian–German writer, publisher, and freelance journalist, Kriemhild "Krimi" Buhl.

Sir Alfred Jules "Freddie" Ayer was an English philosopher who became professionally established through his exposition of major theses of logical positivism in Language, Truth, and Logic (1936). The work's dismissal of metaphysics, and endorsement of emotivism was the cause of much controversy and debate.

Charlotte Dod was an English multi-sport athlete, best known as a tennis player. She won the Wimbledon Ladies' Singles Championship five times, the first one when she was only 15 in the summer of 1887. She remains the youngest ladies' singles champion.

Milan Hodža was a Slovak politician and journalist, serving from 1935 to 1938 as the prime minister of Czechoslovakia. As a proponent of regional integration, he was known for his attempts to establish a democratic federation of Central European states.

Shelby Dade Foote Jr. was an American writer and journalist. Although he primarily viewed himself as a novelist, he is now best known for his authorship of The Civil War: A Narrative, a three-volume history of the American Civil War.

Pierre Eugène Jean Pflimlin was a French Christian Democrat politician who served as the Prime Minister of the Fourth Republic for a few weeks in 1958, before being replaced by Charles de Gaulle during the crisis of that year.

Sir Adolphe-Basile Routhier was a Canadian judge, author, and lyricist. He wrote the lyrics of the original French version of the Canadian national anthem "O Canada". He was born in Saint-Placide, Quebec, to Charles Routhier and Angélique Lafleur.

Milton Subotsky was an American producer and writer of film and television. He was the co-founder of Amicus Productions with Max J. Rosenberg, which produced horror and science-fiction films in the United Kingdom during the 1960's and 70's.

Bud Spencer was an Italian actor, professional swimmer and water polo player. He was known for action-comedy and spaghetti Western roles with his long-time film partner and friend Terence Hill. Spencer and Hill appeared in 18 films together.

Rosemary de Brissac Dobson was an Australian poet, illustrator, editor and anthologist. She published fourteen volumes of poetry, was published in almost every annual volume of Australian Poetry and has been translated into French and other languages.

Eleonora Gonzaga was born a princess of Mantua as a member of the House of Gonzaga, and by marriage to Ferdinand II, Holy Roman Emperor, was Holy Roman Empress, German Queen, Queen of Hungary and Bohemia.

John Berryman VC was a British Army non-commissioned officer and a recipient of the Victoria Cross, the highest award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces.

Zvi Elpeleg was an academic, author, and a senior researcher at the Dayan Institute at Tel Aviv University. Born in Poland, Elpeleg served as a colonel in the Israeli army and later received an ambassadorial appointment.

Milada Horáková was a Czech politician and a member of the underground resistance movement against Nazi Germany and then against the Communist Party of Czechoslovakia. She was focused on preserving democratic institutions and women's rights.

Robert Lyman John Long was a four-star admiral in the United States Navy who served as vice chief of Naval Operations from 1977 to 1979 and as commander in chief Pacific from 1979 to 1983.

George Smith Patton IV was a major general in the United States Army and the son of World War II General George S. Patton Jr. He served in the Korean War and the Vietnam War.

Peter Ludwig Berger was an Austrian-born American sociologist and Protestant theologian. Berger became known for his work in the sociology of knowledge, the sociology of religion, study of modernization, and contributions to sociological theory.

Henry Norris, 1st Baron Norreys of Rycote in Oxfordshire, was an English politician and diplomat, who belonged to an old Berkshire family, many members of which had held positions at the English court.

Thomas Flamank was a lawyer and former MP from Cornwall, who together with Michael An Gof led the Cornish rebellion of 1497, a protest against taxes imposed by Henry VII of England.

Richard Samet "Kinky" Friedman was an American singer, songwriter, novelist, humorist, politician, and columnist for Texas Monthly, who styled himself in the mold of popular American satirists Will Rogers and Mark Twain.

Joseph Walter Jackson was an American talent manager and patriarch of the Jackson family of entertainers. He was inducted into the Rhythm and Blues Music Hall of Fame in 2014.

Irene Joan Marion Sims was an English actress and comedienne, best remembered for her roles in the Carry On franchise, appearing in 24 of the films.

Johann Gottfried Eichhorn was a German Protestant theologian of the Enlightenment and an early orientalist. He was a member of the Göttingen school of history.

Philippe de Noailles, comte de Noailles and later prince de Poix, duc de Mouchy, and duc de Poix à brevêt, was a younger brother of Louis de Noailles, and a more distinguished soldier than his brother. He was the son of Françoise Charlotte d'Aubigné, niece of Madame de Maintenon.

Odo II was Duke of Burgundy between 1143 and 1162.

Michael Joseph, better known as Michael An Gof, was one of the leaders of the Cornish rebellion of 1497, along with Thomas Flamank.

Jan Dymitr Solikowski was a Polish writer, diplomat, Archbishop of Lwów.

Sir John Hayward was an English historian, lawyer and politician.

Johannes Valentinus Andreae, also known as Johannes Valentinus Andreä or Johann Valentin Andreae, was a German theologian and writer.

Guillaume Amfrye de Chaulieu, French poet and wit, was born at Fontenay, Province of Normandy.

Giorgio Costantino Schinas was a Maltese architect and civil engineer. He was of Greek descent.

George John Bonnor was an Australian cricketer, known for his big hitting, who played Test cricket between 1880 and 1888.

Francesco Buhagiar was the second Prime Minister of Malta (1923–1924). He was elected from the Maltese Political Union.

Eugène Augustin Lauste was a French inventor instrumental in the technological development of the history of cinema.

Dorothea Frances Bleek was a German–South African anthropologist and philologist known for her research on the Bushmen of Southern Africa.

Paul Viiding was an Estonian poet, author, and literary critic.

Jaan Lattik was an Estonian politician, writer and a former Estonian Minister of Education and Minister of Foreign Affairs of Estonia.

Daniel Chapin Kinsey was an American hurdler and scholar in physical education.

Eileen Barton was an American singer best known for her 1950 hit song, "If I Knew You Were Comin' I'd've Baked a Cake."