James married Agnes McKnight in 1868 in Cavan, Ontario, Canada. Agnes (daughter of Samuel McKnight and Agnes Welsh) was born on 18 Aug 1839 in Republic of Ireland; died on 15 Jul 1912 in Springville, Ontario, Canada; was buried in Fraserville Cemetery, Fraserville, Ontario, Canada. [Group Sheet] [Family Chart]

1. James W. O'Hara was born in 1869 in Durham Regional Municipality, Ontario, Canada.
2. William Thomas O'Hara was born on 12 Jun 1870 in Springville, Ontario, Canada; died on 10 Jun 1949 in Abbotsford, British Columbia, Canada; was buried in Hazelwood Cemetery, Abbotsford, British Columbia, Canada.
3. Mary Elizabeth O'Hara was born on 4 May 1872 in Cavan, Ontario, Canada; died on 13 Dec 1956; was buried in Fraserville Cemetery, Fraserville, Ontario, Canada.
4. Sarah O'Hara was born on 12 Sep 1876 in Cavan, Ontario, Canada.
5. Jemimah O'Hara was born on 31 Mar 1878 in Durham Regional Municipality, Ontario, Canada; died on 21 Feb 1952.