Notable Deaths on April 18

Forrest Richard "Dickey" Betts was an American rock guitarist and vocalist, best known as a longtime member of the Allman Brothers Band. A co-founder with Duane Allman of the band in 1969, he was central both to the group's rise to critical acclaim in 1971 and its greatest commercial success in the mid-1970s, and was the writer and vocalist on the Allmans' hit single "Ramblin' Man". The Allman Brothers Band broke up and re-formed twice, always with Betts in the lineup, until he was forced out of the group in 2000.

Ernest Taylor Pyle was an American journalist and war correspondent who is best known for his stories about ordinary American soldiers during World War II. Pyle is also notable for the columns he wrote as a roving human-interest reporter from 1935 through 1941 for the Scripps-Howard newspaper syndicate that earned him wide acclaim for his simple accounts of ordinary people across North America. When the United States entered World War II, he lent the same distinctive, folksy style of his human-interest stories to his wartime reports from the European theater (1942–44) and Pacific theater (1945). Pyle won the Pulitzer Prize in 1944 for his newspaper accounts of "dogface" infantry soldiers from a first-person perspective. He was killed by enemy fire on Iejima during the Battle of Okinawa.

Gustave Moreau was a French artist and an important figure in the Symbolist movement. Jean Cassou called him "the Symbolist painter par excellence". He was an influential forerunner of symbolism in the visual arts in the 1860s, and at the height of the symbolist movement in the 1890s, he was among the most significant painters. Art historian Robert Delevoy wrote that Moreau "brought symbolist polyvalence to its highest point in Jupiter and Semele." He was a prolific artist who produced over 15,000 paintings, watercolors, and drawings. Moreau painted allegories and traditional biblical and mythological subjects favored by the fine art academies. J. K. Huysmans wrote, "Gustave Moreau has given new freshness to dreary old subjects by a talent both subtle and ample: he has taken myths worn out by the repetitions of centuries and expressed them in a language that is persuasive and lofty, mysterious and new." The female characters from the Bible and mythology that he so frequently depicted came to be regarded by many as the archetypical symbolist woman. His art fell from favor and received little attention in the early 20th century but, beginning in the 1960s and 70s, he has come to be considered among the most paramount of symbolist painters.

Justus Freiherr von Liebig was a German scientist who made major contributions to the theory, practice, and pedagogy of chemistry, as well as to agricultural and biological chemistry; he is considered one of the principal founders of organic chemistry. As a professor at the University of Giessen, he devised the modern laboratory-oriented teaching method, and for such innovations, he is regarded as one of the most outstanding chemistry teachers of all time. He has been described as the "father of the fertilizer industry" for his emphasis on nitrogen and minerals as essential plant nutrients, and his popularization of the law of the minimum, which states that plant growth is limited by the scarcest nutrient resource, rather than the total amount of resources available. He also developed a manufacturing process for beef extracts, and with his consent a company, called Liebig Extract of Meat Company, was founded to exploit the concept; it later introduced the Oxo brand beef bouillon cube. He popularized an earlier invention for condensing vapors, which came to be known as the Liebig condenser.

Ottorino Respighi was an Italian composer, violinist, teacher, and musicologist and one of the leading Italian composers of the early 20th century. His compositions range over operas, ballets, orchestral suites, choral songs, chamber music, and transcriptions of Italian compositions of the 16th–18th centuries, but his best known and most performed works are his three orchestral tone poems which brought him international fame: Fountains of Rome (1916), Pines of Rome (1924), and Roman Festivals (1928).

Arturo Frondizi Ércoli was an Argentine lawyer, journalist, teacher, statesman, and politician. He was elected president of Argentina and governed from May 1, 1958, to March 29, 1962, when he was overthrown in a military coup. His government was characterized by its strong developmentalist policies, that was less promoted by the State and more oriented to the development of heavy industry as a consequence of the entry of multinational companies.

Kathy Diane Wentworth, known as K. D. Wentworth, was an American science fiction author. A University of Tulsa graduate, she got her start winning the Writers of the Future Contest in 1988, and then later won Field Publications' "Teachers as Writers" Award in 1991. Wentworth served two terms as secretary of the Science Fiction and Fantasy Writers of America in the early 2000s. She served as the editor for the Writers of the Future Contest from 2009 until her death. One of her novelettes, "Kaleidoscope" (2008), and three of her short stories, "Burning Bright" (1997). "Tall One" (1998), and "Born Again" (2005) have been Nebula Award finalists. Wentworth died on April 18, 2012, from complications with pneumonia and cervical cancer.

Sir Harrison Birtwistle was an English composer of contemporary classical music best known for his operas, often based on mythological subjects. Among his many compositions, his better known works include The Triumph of Time (1972) and the operas The Mask of Orpheus (1986), Gawain (1991), and The Minotaur (2008). The last of these was ranked by music critics at The Guardian in 2019 as the third-best piece of the 21st century. Even his compositions that were not written for the stage often showed a theatrical approach. A performance of his saxophone concerto Panic during the BBC's Last Night of the Proms caused "national notoriety". He received many international awards and honorary degrees.

Galdino della Sala, Galdinus or Galdimus, was a Roman Catholic saint from Milan in northern Italy. He was a cardinal elevated in 1165 and he also served as Archbishop of Milan from 1166 to his death in 1176. He was a staunch supporter both of Pope Alexander III, and of Milan and its neighbours in Lombardy, in their joint and parallel struggles against the Antipope Victor IV, supported by Holy Roman Emperor Frederick I Barbarossa.

Milton Brown was an American bandleader and vocalist who is considered an early adopter of Western swing music. His band was the first to fuse country music, blues, jazz, and pop together into a unique, distinctly American hybrid, thus giving him the nickname, "Father of Western Swing". The birthplace of Brown's upbeat "hot-jazz hillbilly" string band sound was developed at the Crystal Springs Dance Hall in Fort Worth, Texas, from 1931 to 1936.

Polydore Vergil or Virgil, widely known as Polydore Vergil of Urbino, was an Italian humanist scholar, historian, priest and diplomat, who spent much of his life in England. He is particularly remembered for his works the Proverbiorum libellus (1498), a collection of Latin proverbs; De inventoribus rerum (1499), a history of discoveries and origins; and the Anglica Historia, an influential history of England. He has been dubbed the "Father of English History".

George Philip "Phil" Bryant was an American archer who competed in the 1904 Summer Olympics. He won two gold medals in Archery at the 1904 Summer Olympics in the double York and American rounds. In the team competition he won the bronze medal as part of the Boston Archery Club team. Bryant had not won any major titles before the Olympics, but later won national championships in 1905, 1909, 1911, and 1912.

Stephen Lekapenos or Lecapenus was the second son of the Byzantine emperor Romanos I Lekapenos, and co-emperor from 924 to 945. With his younger brother Constantine, he deposed Romanos I in December 944, but they were overthrown and exiled a few weeks later by their brother in law, the legitimate emperor Constantine VII. Stephen lived out his life in exile on the island of Lesbos, where he died on Easter 963.

Maurice Gustave Gamelin was a French general who served as head of the French Army from 1935 and as Commander-in-Chief of the Allied Armies in France from the outbreak of the Second World War to his dismissal during the Battle of France in May 1940. The strategic choices Gamelin made ultimately left France vulnerable to a lightning offensive through the Ardennes and have been extensively criticised by historians.

John Foxe was an English clergyman, theologian, and historian, notable for his martyrology Foxe's Book of Martyrs, telling of Christian martyrs throughout Western history, but particularly the sufferings of English Protestants and "proto-Protestants" from the 14th century and in the reign of Mary I. The book was widely owned and read by English Puritans and helped to mould British opinion on the Catholic Church for several centuries.

Marie-Josephte Corriveau, better known as "la Corriveau", was a New French woman who was sentenced to death in 1763 by a British court martial for the murder of her second husband. She was hanged, and her body was placed in a gibbet on public display in Lévis. Becoming a well-known figure in Québécois folklore, she is the subject of many books and plays.

Isoroku Yamamoto was an admiral of the Imperial Japanese Navy (IJN) and the commander of the Combined Fleet during World War II. He commanded the fleet from 1939 until his death in 1943, overseeing the start of the Pacific War in 1941 and Japan's initial successes and defeats before his plane was shot down by U.S. fighter aircraft over New Guinea.

Count John III the Younger of Nassau-Siegen, German: Johann III. der Jüngere Graf von Nassau-Siegen, succeeded, with his brothers, his father in 1416 as Count of Nassau-Siegen. With his brothers, he inherited the County of Vianden in 1417, and also inherited half of the County of Diez in 1420. He descended from the Ottonian Line of the House of Nassau.