Angus Gilchrist Wynne, Sr., lawyer and civic leader, was born in Wills Point, Texas, on January 12, 1885, to William Benjamin and Margaret Welch (Henderson) Wynne. He attended public school in Wills Point and a private school in Austin before entering Tyler Commercial College in 1901. He worked with his attorney father and matriculated at the University of Texas in 1903. After a year of university study, he went to Washington as secretary to Gordon Russell, representative of the Seventh Texas Congressional District. He returned to the university in 1905 and studied law (1906–09), then withdrew. He was admitted to the bar in 1909, returned to Wills Point, and entered the firm of Wynne and Collins. He moved to Kaufman in 1912 and to Longview in 1931. He maintained large farming interests in Kaufman County and a law office in Longview even after his move to Dallas in 1954. Wynne was the first president of the State Bar of Texas (1940) and was on the University of Texas Development Board until his retirement in 1967, when he was named trustee emeritus. He was one of seven founding incorporators of the University of Texas Law School Foundation (1952). He was chairman of the Texas Supreme Court Advisory Committee, a trustee of the Southwestern Legal Foundation, a fellow of the American College of Trial Lawyers, and a member of the American Bar Association's House of Delegates, the State Bar Rules Committee (1952–53), the Texas Bar Foundation, and the Dallas and Gregg County bar associations. Wynne established an endowed professorship at the University of Texas Law School in memory of his father in 1969. His own son endowed a similar chair in honor of Angus Wynne on February 1, 1974. Angus Wynne, Sr., also served as chairman of the statewide committee for the Gonzales Warm Springs Rehabilitation Foundation (1957) and president of the Richmond Freeman Memorial Clinic. In 1924 Wynne, his father, and two brothers were simultaneously admitted to practice before the United States Supreme Court, a first in that court's history. Wynne was a Methodist and a conservative Democrat. He was married to Nemo Shelmire, and they had two sons. He died at his home in Dallas on December 16, 1974.