D. Harold Byrd

David Harold "Dry Hole" Byrd (24 April 1900 – 14 September 1986) was a noted Texan producer of petroleum, and a co-founder of the Civil Air Patrol. Byrd's cousin, polar explorer Richard E. Byrd, named Antarctica's Harold Byrd Mountains for him.

Byrd was born in Detroit, Texas on April 24, 1900, the youngest of eight children of Mary Easley Byrd and Edward Byrd, and grew up in Texas and Oklahoma. Byrd's cousin, polar explorer Richard E. Byrd, named Antarctica's Harold Byrd Mountains for him, after Byrd had contributed to the expedition that found them. Another cousin (Richard's brother) was Harry F. Byrd, who became a Democratic Party Governor of Virginia and a leading conservative US Senator.

Byrd worked in the Burkburnett, Texas oilfield before attending Trinity University in 1917 and studying geology at the University of Texas in 1919–1921. During the summer vacations he worked at an oilfield in Santa Anna, Texas.

Byrd married twice; on June 8, 1935, he married Mattie Caruth (March 7, 1908 to February 15, 1972) and again on February 14, 1974 - on her birthday - to the widow Mavis Barnett Heath (February 14, 1908 to April 9, 1998) following the death of his first wife in 1972. He had two sons from his first marriage. The two sons were David Harold Byrd Jr. and Caruth Clark Byrd.

Mavis Barnett Heath was the widow of William Womack Heath (December 7, 1903 to June 22, 1971) and this couple were close friends to Lyndon B. Johnson and his wife, Lady Bird Johnson. This Heath couple were instrumental in bringing the LBJ Library to the University of Texas.

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