+———Robert Turner PIERCE (1873 – 1952)
      |
  +———Robert Mortimer “Mortimer” PIERCE (26 May 1904 Wilberforce, Ontario, Canada – 1980)
  |   |                
  |   |           +———Michael GREENE (1761 Castletownroche, Cork, Ireland – 1844 Castletownroche, Cork, Ireland)
  |   |           |
  |   |       +———John GREENE (16 Mar 1788 Castletownroche, Cork, Ireland – 19 Sep 1874 Fitzroy, Ontario, Canada)
  |   |       |   |    
  |   |       |   +———Ann (1765 Castletownroche, Cork, Ireland – Castletownroche, Cork, Ireland)
  |   |       |
  |   |   +———Thomas GREEN (1828 – 15 Apr 1893)
  |   |   |   |    
  |   |   |   +———Catherine MULSHEGIN (1801 Ireland – 6 Nov 1872 Fitzroy, Ontario, Canada)
  |   |   |
  |   +———Sarah Jane GREEN (20 Nov 1877 Wilberforce, Ontario, Canada – 29 Dec 1926 Wilberforce, Ontario, Canada)
  |       |        
  |       |   +———William WHITEHEAD (abt 1797 Kent, England – 8 Aug 1844 Ottawa, Ontario, Canada)
  |       |   |
  |       +———Ellen Annie WHITEHEAD (6 Mar 1842 Bytown (Ottawa), Ontario, Canada – 10 Mar 1915)
  |           |    
  |           +———Mary Jane PARKER (abt 1805 Waterford, Ireland – 6 Jun 1888 Ottawa, Ontario, Canada)
  |    
  PIERCE ( – living)
  |            
  |       +———John MARTIN (9 May 1833 Ireland – 18 May 1902)
  |       |
  |   +———Thomas Griffith MARTIN (25 Dec 1869 – 27 Jul 1947)
  |   |   |    
  |   |   +———Margaret GRIFFITH (29 Jan 1840 Ontario, Canada – 17 Apr 1926)
  |   |
  +———Mary Evelyn MARTIN (23 Oct 1907 Wilberforce, Ontario, Canada – 1977)
      |                
      |           +———William (unverified) BOYLE (abt 1770 Ireland – Ireland)
      |           |
      |       +———Henry John BOYLE (1 May 1803 Bandon, County Cork, Ireland – 3 Feb 1876 Lake Dore, Ontario, Canada)
      |       |   |    
      |       |   +———Sophie (unverified) DAVIES
      |       |
      |   +———William BOYLE (11 Jul 1836 Huntley Twp, Carleton Place, Ontario, Canada – 1 Mar 1907)
      |   |   |    
      |   |   +———Martha READE (Huntley Twp, Ontario, Canada – 1843 Huntley Twp, Ontario, Canada)
      |   |
      +———Margaret Ann BOYLE (2 Aug 1877 – 27 Mar 1955)
          |                
          |           +———John BOWES (12 Apr 1705 – )
          |           |
          |       +———William “James” BOWES (15 Nov 1760 Glamis, Scotland – 4 Jan 1835 Ramsey Twp, Lanark Co, Ontario, Canada)
          |       |   |    
          |       |   +———LILLIAS CUTHBERTSON
          |       |
          |   +———Robert BOWES (22 Mar 1806 Damhead of Balloch, Reg of Bonhill, Dubartonshire, Scotland – 15 Oct 1898 Admaston Twp, Ontario, Canada)
          |   |   |        
          |   |   |   +———James MONTEITH
          |   |   |   |
          |   |   +———Lady Margaret MONTEITH (2 Oct 1768 Port Glasgow, Renfrewshire, Scotland – 1838 Ramsey Twp, Lanark, Ontario, Canada)
          |   |       |        
          |   |       |   +———Robert KERR (bef 1717 – )
          |   |       |   |
          |   |       +———Katherine KERR (17 Jul 1747 Port Glasgow, Scotland – )
          |   |           |        
          |   |           |   +———James SINCLAIR
          |   |           |   |
          |   |           +———Margaret SINCLAIR (bef 1721 Scotland – Scotland)
          |   |               |    
          |   |               +———Catherine TAYLOR
          |   |
          +———Mary Black BOWES (23 Sep 1845 Admaston, Ontario, Canada – 25 Nov 1918)
              |                
              |           +———Walter BLACK (1734 Scotland – aft 1837 Scotland)
              |           |
              |       +———Walter BLACK
              |       |
              |   +———Walter BLACK (1769 – 1851 Ontario, Canada)
              |   |
              +———Janet BLACK (14 Apr 1815 near Glasgow Cross, Glasgow, Scotland – 6 May 1891 Admaston Twp, Ontario, Canada)
                  |    
                  +———Ellen GUNNAN (1773 – 1842)