William married Martha Leona McCuistion on 20 Nov 1883 in Lamar County, Texas. Martha (daughter of Mitchell Henderson McCuistion and Margaret Johnson) was born on 10 Feb 1861 in Lamar County, Texas; died on 15 Aug 1949 in Dallas, Dallas County, Texas; was buried on 16 Aug 1949 in Dallas, Dallas County, Texas. [Group Sheet] [Family Chart]

1. Harry Holbrook was born on 20 Sep 1884 in Lamar County, Texas; died on 29 Nov 1884 in Lamar County, Texas; was buried in Nov 1884 in Pattonville, Lamar County, Texas.
2. Wilver Mae Holbrook was born on 26 Mar 1886; died on 2 Feb 1916.
3. Harry H. Holbrook was born on 23 Nov 1888 in Paris, Lamar County, Texas; died on 16 Oct 1961 in Dallas, Dallas County, Texas; was buried on 18 Oct 1961 in Dallas, Dallas County, Texas.
4. Walter Scott Holbrook was born on 8 Nov 1903.