1  Walter Garfield O’BRIEN (1881 Ayr, Waterloo, Ontario, Canada – )
   +  Mabel FAIRGRIEVE (25 Oct 1882 North Dumfries, Waterloo, Ontario, Canada – 6 Apr 1932 Guelph, Ontario, Canada)
      2  Frederick George O’BRIEN (3 Jun 1910 Guelph, Ontario, Canada – )
      2  Lena Eleanore O’BRIEN (13 Feb 1908 Guelph, Ontario, Canada – )