+———Irwin VANCE (17 Mar 1819 Canada – 12 Dec 1911 March, Ontario, Canada)
          |
      +———Thomas VANCE (14 May 1847 – 14 Aug 1925 March, Ontario, Canada)
      |   |            
      |   |       +———William CAVANAGH (1759 Tipperary, Ireland – abt 1819 Tipperary, Ireland)
      |   |       |
      |   |   +———William CAVANAGH (abt 1798 Tipperary, Ireland – 1838 Fitzroy, Ontario, Canada)
      |   |   |   |    
      |   |   |   +———Elizabeth “Eliza” DONNELLY (abt 1769 Tipperary, Ireland – abt 1829 Tipperary, Ireland)
      |   |   |
      |   +———Eliza CAVANAGH (1828 Ontario, Canada – 10 Oct 1910)
      |       |        
      |       |   +———Thomas HODGINS
      |       |   |
      |       +———Rebecca HODGINS (28 Oct 1803 Tipperary, Ireland – 11 Jan 1878 Huntley, Ontario, Canada)
      |           |    
      |           +———Mary
      |
  +———Edward Oscar VANCE (1890 – 1972)
  |   |        
  |   |   +———William DOWNEY (1823 – 22 Oct 1889)
  |   |   |
  |   +———Charlotte DOWNEY (30 Aug 1849 – 25 Aug 1905)
  |       |    
  |       +———Isabella BARTON (1826 – 25 Dec 1862)
  |    
  William Roy VANCE (1934 – 10 Dec 1934 March, Ontario, Canada)
  |        
  |   +———Isaac Ben DAVIS
  |   |
  +———Katie Alexandra DAVIS (1901 March, Ontario, Canada – 1996)
      |    
      +———Elizabeth SMITH