+———James GERVIN (1811/2 County Tyrone, Ireland – 27 Nov 1875 Ottawa, Ontario, Canada)
      |
  +———Ernest Berril GERVIN (30 May 1868 Ontario, Canada – 9 Feb 1945 Alameda, California, USA)
  |   |        
  |   |   +———William WHITEHEAD (abt 1797 Kent, England – 8 Aug 1844 Ottawa, Ontario, Canada)
  |   |   |
  |   +———Elizabeth WHITEHEAD (17 Mar 1824 St. Marylebone, Middlesex, England – 15 Mar 1911 Ottawa, Ontario, Canada)
  |       |    
  |       +———Mary Jane PARKER (abt 1805 Waterford, Ireland – 6 Jun 1888 Ottawa, Ontario, Canada)
  |    
  Anna Elizabeth GERVIN (19 Apr 1898 Quebec, Canada – 24 Aug 1985 San Bernadino Co, California, USA)
  |    
  +———Emma L. (30 May 1871 – 26 Mar 1951)