Irving married Ethel Kinsbury Grant on 2 Jun 1909 in Taunton, Bristol, Massachusetts, USA. Ethel (daughter of Lewis M. Grant and Mary Florence Kingsbury) was born on 1 Apr 1882 in Wellesley, Norfolk, Massachusetts, USA; died on 6 Feb 1961; was buried in Woodlawn Cemetery, Wellesley, Norfolk, Massachusetts, USA. [Group Sheet] [Family Chart]

1. Marjorie Grant Bowman was born on 28 Dec 1910 in Wellesley, Norfolk, Massachusetts, USA; died on 11 Jan 1911 in Wellesley, Norfolk, Massachusetts, USA; was buried in Woodlawn Cemetery, Wellesley, Norfolk, Massachusetts, USA.
2. Irving Grant Bowman was born on 5 Mar 1913 in Wellesley, Norfolk, Massachusetts, USA; died on 22 Mar 1994 in Osceola, Florida; was buried in Evergreen Cemetery, Arlington, Bennington, Vermont, USA.