+———Robert A. NEEDHAM (1911 – 1954)
  |    
  Dorothy P. NEEDHAM (1947 – 2000)
  |                
  |           +———Thomas DELAHUNT (1823 Ontario, Canada – 14 Jan 1892)
  |           |
  |       +———John DELAHUNT (1844 Huntley, Ontario, Canada – 30 Nov 1919 Torbolton, Carleton Co, Ontario, Canada)
  |       |   |        
  |       |   |   +———John OLIVE (1788 Borriskane, Ireland – 27 Apr 1867)
  |       |   |   |
  |       |   +———Elizabeth OLIVE (1824 Ireland – 26 Feb 1900 Fitzroy, Ontario, Canada)
  |       |       |        
  |       |       |   +———William CAVANAGH (1759 Tipperary, Ireland – abt 1819 Tipperary, Ireland)
  |       |       |   |
  |       |       +———Mary CAVANAGH (abt 1800 Tipperary, Ireland – 16 Oct 1867 Huntley, Ontario, Canada)
  |       |           |    
  |       |           +———Elizabeth “Eliza” DONNELLY (abt 1769 Tipperary, Ireland – abt 1829 Tipperary, Ireland)
  |       |
  |   +———George Henry DELAHUNT (16 Nov 1878 Torbolton, Ontario, Canada – 1957)
  |   |   |        
  |   |   |   +———John MILFORD
  |   |   |   |
  |   |   +———Mary Ann MILFORD (7 Dec 1854 Torbolton, Ontario, Canada – 8 Oct 1927 Carleton, Ontario, Canada)
  |   |       |    
  |   |       +———Sarah NOTT
  |   |
  +———Effie J. DELAHUNT (1917 Ontario, Canada – 2005)
      |        
      |   +———William WILSON (1842/3 – 9 Jun 1913)
      |   |
      +———Margaret WILSON (1888 – 1972)
          |    
          +———Margaret DOLAN (1850/1 – 5 Sep 1927)