Orval married Irene Campbell McDowell in 1927. Irene (daughter of Harvey McDowell and Maude Campbell) was born on 25 Aug 1904 in East Wawanosh Township, Ontario, Canada; died in Oct 1982 in Montreal, Quebec, Canada; was buried in Avondale Cemetery, Stratford, Ontario, Canada. [Group Sheet] [Family Chart]

1. Donna Irene Graham was born on 28 Oct 1933 in Stratford, Ontario, Canada; died on 3 Sep 1936 in Stratford, Ontario, Canada; was buried in Avondale Cemetery, Stratford, Ontario, Canada.
2. Terry William Graham was born on 21 Dec 1938 in Stratford, Ontario, Canada; died on 22 Dec 2010 in Prince George, British Columbia, Canada.
3. Gordon Campbell Graham was born on 12 Mar 1943 in Montreal, Quebec, Canada; died on 25 Feb 2012 in Montreal, Quebec, Canada.