Frederick married Ila Diantha Pangborn on 24 Jul 1894 in Kettle Falls, Lincoln, Washington, USA. Ila (daughter of Howard Hanchett Pangborn and Alice Elizabeth Pratt) was born on 14 Jul 1868 in Shellsburg, Benton, Iowa, USA; died on 26 Dec 1942 in Spokane, Spokane, Washington, USA. [Group Sheet] [Family Chart]

1. Eloise McKay was born on 22 Sep 1897 in Harrington, Lincoln, Washington, USA; died on 19 Jan 1996 in Spokane,Spokane,Washington, USA.
2. George Frederick McKay was born on 11 Jun 1899 in Harrington, Lincoln, Washington, USA; died on 4 Oct 1970 in Stateline,,Nevada, USA.
3. Francis Howard McKay was born on 7 Mar 1901 in Spokane, Spokane, Washington, USA; died in 1985 in Seattle,King,Washington, USA.
4. Alice McKay was born on 6 Sep 1903 in Spokane, Spokane, Washington, USA; died in 1991.
5. Diantha McKay was born on 9 Feb 1911 in Spokane, Spokane, Washington, USA; died in 1984 in Seattle,King,Washington, USA.