Henry Hayne Crum was born October 1, 1914 in Denmark, South Carolina, the son of John Wesley Crum, II and Priscilla Hart Crum. He was a 1935 graduate of Wofford College and attended George Washington University Law School and graduated from the University of South Carolina School of Law in 1939. He was admitted to the South Carolina Bar in 1939. He practiced tax, estate law and real estate with his father, J. Wesley Crum, brother, David H. Crum, and son, Wesley Crum, from 1939 until his full retirement in 2000, with the exception of his military service in World War II and the Korean War. He served in World War II from 1940 through 1945 as the Traffic Control Officer for the First United States Army Headquarters under General Omar Bradley and then General Courtney Hodges. He received the Bronze Star for his service in World War II. Colonel Crum served with the 360th Civil Affairs Unit of the United States Army Reserves.
He served on the South Carolina Supreme Court Commission on Grievance and Discipline and was one of the members of the first South Carolina Bar Commission on Taxation Law Specialization. He was City Attorney for Denmark for 30 years and served as a member of several committees of the General Assembly.
He was very active in Bethel Park United Methodist Church, serving in many positions, including forty years teaching Sunday School and delegate to the Methodist annual conference. He did extensive pro bono work in recruiting and establishing industry in Denmark and Bamberg County and served as a member of the Board of the Security Federal Bank.
Henry Hayne Crum married the former Mary Bass Crum and they had three children, Mary Elizabeth Crum, Esquire, John Wesley Crum, Esquire, and Henry Hayne Crum, Research Chemist.