Filson married Thelma Elizabeth Eckford on 23 Feb 1977 in San Diego, San Diego, California, UnitedStates. Thelma (daughter of Thomas Walter Eckford and Bessie Chandler) was born on 10 Jun 1910 in Mitchell, Mitchell, Iowa, United States; died on 11 Mar 2004 in Escondido, San Diego, California, United States. [Group Sheet] [Family Chart]