+———John COWAN (abt 1813 Armagh Co, Ireland – 13 Mar 1865 Huron Co, Ontario, Canada)
          |
      +———John COWAN (11 May 1852 Hemingforth, Quebec, Canada – 20 Jan 1924 Winnipeg, Manitoba, Canada)
      |   |    
      |   +———Mary Jane SAVAGE (17 Jun 1816 near Markethill, County Armagh, Northern Ireland – 5 Apr 1902 Thornhill, Manitoba, Canada)
      |
  +———Howard COWAN (18 Apr 1885 Manitoba, Canada – 30 May 1957 Vancouver General Hospital, Vancouver, British Columbia, Canada)
  |   |        
  |   |   +———John MCNABB (11 Dec 1833 Kirkintillock, Dunbartonshire, Scotland – 19 Jul 1879)
  |   |   |
  |   +———Grace Blair “Gracie” MCNABB (11 Jun 1859 Scotland – 19 Nov 1947 at home in Winnipeg, Manitoba, Canada)
  |       |        
  |       |   +———Andrew BLAIR
  |       |   |
  |       +———Isabella Eliza “Eliza” BLAIR (30 Mar 1828 Scotland – 8 Nov 1910 RM of Pembina, Manitoba, Canada)
  |           |    
  |           +———Grizel DOUGLAS
  |    
  Reginald Lake COWAN (2 Dec 1911 Kingston, Frontenac, Ontario, Canada – )
  |        
  |   +———Elmer Isaiah LAKE (Ontario, Canada – )
  |   |
  +———Mabel Anne LAKE (8 May 1888 Pittsburg, Pennsylvania, USA – 10 Mar 1981 Burnaby General Hospital, Burnaby, British Columbia, Canada)
      |    
      +———Anne MINACKER (Ontario, Canada – )