+———Robert YOUNG (1870 – 26 Feb 1906)
  |    
  Hillard P. YOUNG (21 Jun 1897 Huntley, Ontario, Canada – )
  |                
  |           +———William CAVANAGH (1759 Tipperary, Ireland – abt 1819 Tipperary, Ireland)
  |           |
  |       +———John CAVANAGH (1796 Tipperary, Ireland – 11 May 1883 Huntley, Carleton Co, Ontario, Canada)
  |       |   |    
  |       |   +———Elizabeth “Eliza” DONNELLY (abt 1769 Tipperary, Ireland – abt 1829 Tipperary, Ireland)
  |       |
  |   +———William CAVANAGH (1835 Huntley, Ontario, Canada – 5 Oct 1919 Huntley, Ontario, Canada)
  |   |   |        
  |   |   |   +———Michael RIVINGTON (1777 Cloghjordan, Tipperary, Ireland – bef 1852 Huntley, Ontario, Canada)
  |   |   |   |
  |   |   +———Jane B. RIVINGTON (1798 Tipperary, Ireland – 11 Apr 1880 Huntley, Ontario, Canada)
  |   |       |    
  |   |       +———Catherine GEHMAN (abt 1777 Tipperary, Ireland – 2 Jun 1864 Huntley, Ontario, Canada)
  |   |
  +———Mary Emeline CAVANAGH (1867 – 16 May 1936 Ontario, Canada)
      |    
      +———Catherine DORNING (1842 – 6 May 1927)