Douglas married Jean Ann Kohlmeyer on 13 May 1967 in Redwood City, San Mateo County, California, USA. Jean (daughter of Leland James Kohlmeyer and Mary Ann Peschka) was born on 24 May 1942 in Oakland, Alameda County, California, USA; died on 11 Apr 2016 in Napa, Napa County, California, USA. [Group Sheet] [Family Chart]