John S. Clark was born on November 2, 1823, in Mentz, New York.

His original name was John Swarthout Smith Duvall, and it was changed to John Clark “by an act of the legislature” according to the wish of his grandfather Benoni Clark, who made him his heir. He attended Bethany College in West Virginia and later became a civil engineer and surveyor in Cayuga County. In May of 1861, he was selected as Colonel in command of the newly forming 19th Regiment of New York Volunteers who left for Washington and the Union Army. Clark's main task was as a military topographer. When he returned to civilian life, he became the City Engineer and Surveyor of Auburn, New York. He also allowed his interests in history and archaeological topography to flourish. He was in communication with many of the eminent 19th-century archeologists and historians of the Northeastern United States. He tried to locate formerly occupied native villages in upstate New York and wrote about the Native American archeology along the Susquehanna River. He also wrote “General Sullivan's Campaign against the Western Indians” (1879), as well as the so-called “Groveland Massacre". He received a Cornplanter medal given for excellence in Iroquois Research.

In 1842, he married Mary Ann Crofoot (1821–1887). In 1887, he remarried Euretta Eggleston Welsh (1845–1923). He died on April 7, 1912, in Auburn, Cayuga County, New York.

American pop country songwriter Michael Clark has hit the charts several times on both the Billboard US Hot Country list and the Hot 100. His 1978 song “Come on in” performed by the Oak Ridge Boys, peaked at No. 3 on the former, as did “Savin’ My Love for You,” sung by Pake McEntire in 1986 and “Big Love,” written with Jeff Stevens in 1996 and sung by Tracy Byrd (not the same as the 1987 Fleetwood Mac song). His 1993 “Reckless,” also written with Jeff Stevens and recorded by the group “Alabama,” peaked at No. 1 on Billboard’s Hot 100. Clark’s biggest hit, however, was his 1981 “Slow Hand,” written with John Bettis, which launched the careers of the Pointer Sisters. This song reached number 2 on the Hot 100 and stayed there for five weeks. Clark wrote over 400 songs in total.

Diminutive international star Petula Clark was born in Ewing, Surrey, daughter of a Welsh mother and English father. They went to live outside London during the blitz, and it was there, at age nine, that she made her radio debut inadvertently: she was at a BBC event when there was an air raid; the organizers asked if someone could sing to calm the studio audience, and it was enthusiastic when she did so. She sang for the BBC for the remainder of the war, giving 500 performances, including 200 to entertain the troops. Meanwhile in 1944, a filmmaker had seen her at a show at Royal Albert Hall and promoted her as a child actress for several movies and television series. In 1947, when 15, she met Glasgow pianist Joe Henderson (known as “Mr. Piano”); they collaborated for the next decade. For her stage name “Petula,” she used a combination of the names of her father’s former girl friends, Pet and Ulla. In 1949 she recorded her first song, Teresa Brewer’s “Music, Music, Music.” In 1954 she hit the charts with “The Little Shoemaker” and later hit No. 1 twice in Britain with “Sailor” and “This is My Song.”
A new career singing in French began in 1957 when she fell in love with Parisian Claude Wolff, an executive with Vogue Records whom she married in 1961. Although she was now touring Europe, recording hits in French, Spanish, Italian and German, her career in Britain began to falter. Tony Hatch, one of her collaborators, proposed some new songs; she turned them down, but heard him fiddling with chords on an unfinished melody that she loved. This became “Downtown,” an immediate hit in Britain and No. 1 in the United States in 1965, selling 3 million copies. She reached the U.S. top 40 some 15 times in the next three years, winning three Grammy awards, two for “Downtown" and another for “I Know a Place.” She also made several films, among them, “Finian’s Rainbow In 1981 she turned to the stage and acted in shows in London and on Broadway, once playing the role of Maria von Trapp in “The Sound of Music” so well that von Trapp pronounced her the best Maria she had seen. Before the pandemic shut it down in 2020, she was playing the “Bird Woman” in Mary Poppins. Her honors include Commander of the Order of the British Empire (1998), Commander of the “Ordre des arts et des lettres” in France, the “Grand prix national du disque français, and the induction of “Downtown” into the Grammy Hall of Fame. She sold more than 70 million records in five languages during her eight-decade career.

Born in London, England, Thomas H. Clark was educated at Harvard University from which he received an A.B. in 1917, A.M. 1921, and Ph.D. in 1923. He joined the staff of McGill University in 1924 as Assistant Professor of palaeontology in 1924 and was Logan Professor of palaeontology from 1930 until 1962. He served as chairman of the Department of Geological Sciences from 1952 until 1958 and has been Emeritus Professor since 1963.

Rev. William Brown Clark was born on January 25, 1805, in Biggar, Lanarkshire, Scotland.

In the 1840s, he was a Free Church minister at the Parish of Half-Morton in the County of Dumfries in Scotland. In 1851, he moved to Canada and participated in the Presbyterian missionary work in British Columbia. He also served as a Presbyterian minister in Quebec City and Montreal.

In 1836, he married Jane (Jean) Brown (1803–1854). In 1870, he remarried Amelia Torrance (1813–1890). He died on March 15, 1893, in Dundas, Ontario.