Winant married Constance Rivington Russell (1899-1983) in 1919.
They had a daughter, Constance (1921-1978), and two sons, John Jr. (1922-1993) and Rivington (1925-2011).
 Constance married Carlos Valando, a Peruvian scientist, in 1941.

John Winant Jr. served as a bomber pilot in World War II and was taken prisoner by the Germans.
Sent to Colditz, he was removed in April 1945 as one of the Prominente to be used as a bargaining chip by Himmler and the SS as the end of the war approached; he was eventually released.
Rivington Winant also served in World War II and later became treasurer at the United Nations.
Winant married Constance Rivington Russell (1899-1983) in 1919. They had a daughter, Constance (1921-1978), and two sons, John Jr. (1922-1993) and Rivington (1925-2011).  Constance married Carlos Valando, a Peruvian scientist, in 1941.
John Winant Jr. served as a bomber pilot in World War II and was taken prisoner by the Germans. Sent to Colditz, he was removed in April 1945 as one of the Prominente to be used as a bargaining chip by Himmler and the SS as the end of the war approached; he was eventually released. Rivington Winant also served in World War II and later became treasurer at the United Nations.
John Gilbert Winant