 In 1910, Gerry married Mathilde Scott Townsend (1885–1949), the daughter of Richard H. Townsend (1850–1902), the President of the Erie and Pittsburgh Railroad, and the granddaughter of William Lawrence Scott (1828–1891), a Pennsylvania railroad and coal magnate who was a member of the U.S. House of Representatives from Pennsylvania.They did not have children and divorced in 1925.Later that same year, Mathilde married Sumner Welles (1892–1961), who was eleven years her junior whom had divorced his wife, Esther Slater, in 1923.