+———William CAVANAGH (1759 Tipperary, Ireland – abt 1819 Tipperary, Ireland)
              |
          +———Dennis CAVANAGH (abt 1792 Tipperary, Ireland – 18 Dec 1858 Huntley, Ontario, Canada)
          |   |    
          |   +———Elizabeth “Eliza” DONNELLY (abt 1769 Tipperary, Ireland – abt 1829 Tipperary, Ireland)
          |
      +———Richard CAVANAGH (7 Sep 1846 Ontario, Canada – bur. Christ Church Anglican Cem, Carp, Ontario, Canada)
      |   |    
      |   +———Jane CARTER (1801 Ireland – 22 Nov 1878 Huntley, Ontario, Canada)
      |
  +———Ira William “William” CAVANAGH (13 Feb 1878 Ontario, Canada – 14 Sep 1946 Ottawa, Ontario, Canada)
  |   |        
  |   |   +———Cornelius MCKAY
  |   |   |
  |   +———Margaret Mary MCKOY (1852 – )
  |       |    
  |       +———Eleanor MORELL
  |    
  Alfaretta Doreen CAVANAGH (5 Oct 1904 Fitzroy, Ontario, Canada – 1 May 1976 Ottawa, Ontario, Canada)
  |        
  |   +———James STEVENSON
  |   |
  +———Ida Mabel STEVENSON (7 Jun 1879 Fitzroy, Ontario, Canada – 1963)
      |    
      +———Elizabeth STITT