+———VANDERVOORT
          |
      +———John Myers VANDERVOORT (22 Apr 1824 Ontario, Canada – 22 Mar 1908 RM of Stanley, Manitoba, Canada)
      |
  +———Frank Ettur VANDERVOORT (20 Jul 1877 – 2 Jun 1909 Morden, Manitoba, Canada)
  |   |    
  |   +———Elizabeth EATON (19 Aug 1837 Ontario, Canada – aft 1906)
  |    
  Eva Thelma “Thelma” VANDERVOORT (26 Apr 1903 – )
  |            
  |       +———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)
  |   |
  +———Mabel Gertrude COWAN (22 Feb 1878 – aft 1921)
      |        
      |   +———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