David blackwell's family members

Grover Blackwell and Mabel Johnson were the parents of David Blackwell. He also had three younger siblings, two brothers and one sister. In 1947, David Blackwell married Ann Madison. David and Ann had eight children together, four of whom survived his death. The surviving children were Julia Madison Blackwell, David Harold Blackwell Jr., Grover Johnson Blackwell, and Ruth Blackwell Herch.