Thomas married Mary McKnight on 10 Jun 1869 in Church, Lancashire, England, United Kingdom. Mary (daughter of Samuel McKnight and Agnes Welsh) was born on 28 Aug 1842 in Republic of Ireland; died on 13 Jan 1910 in Durham Regional Municipality, Ontario, Canada; was buried in Pontypool Cemetery, Pontypool, Ontario, Canada. [Group Sheet] [Family Chart]

1. Robert John Bannan was born on 29 Nov 1869 in Northumberland County, Ontario, Canada.
2. Thomas William Bannan was born in Aug 1872 in Durham Regional Municipality, Ontario, Canada.
3. Mary Jane Bannan was born on 20 Mar 1877 in Fraserville, Ontario, Canada; died on 24 Sep 1919 in Durham Regional Municipality, Ontario, Canada; was buried in Pontypool Cemetery, Pontypool, Ontario, Canada.
4. Louisa Bannan was born on 16 Mar 1879 in Cavan, Ontario, Canada; died on 28 Apr 1938 in Durham Regional Municipality, Ontario, Canada; was buried in Ballyduff Cemetery, Ballyduff, Ontario, Canada.