+———Thomas EVANS
      |
  +———Joseph EVANS (3 Mar 1840 Nepean, Ontario, Canada – 13 Mar 1907)
  |   |    
  |   +———Mary Ann SWITZER
  |    
  Charles Evans EVANS (10 May 1894 Ontario, Canada – )
  |        
  |   +———James GERVIN (1811/2 County Tyrone, Ireland – 27 Nov 1875 Ottawa, Ontario, Canada)
  |   |
  +———Henrietta GERVIN (9 Jul 1859 Ontario, Canada – 9 Mar 1932 Vancouver, British Columbia, Canada)
      |        
      |   +———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)