Isaac John Roos was born 1873, Toronto, York Co., Ontario, Canada; died Yes, date unknown.
Isaac married Mary Liphardt 17 Apr 1903, Waterloo City, Waterloo Region, Ontario, Canada. Mary (daughter of John Liphardt and Elizabeth Hoffman) was born 7 Mar 1875, Waterloo City, Waterloo Region, Ontario, Canada; died Yes, date unknown. [Group Sheet]