William married Mary Charlotte Probyn Smithwick on 29 Jan 1912 in London, UK. Mary (daughter of John Smithwick and Emily Charlotte Hannah Webb) was born on 30 May 1873 in Shanbally House, Ballymackey, Co. Tipperary, IE; died on 11 Jul 1940 in Summerhill, Nenagh, Co. Tipperary, IE. [Group Sheet] [Family Chart]