+———James AMM (Quebec, Canada – )
      |
  +———Carson Johnson AMM (22 Oct 1897 Quoi, Quebec, Canada – 13 Feb 1937 West Summerland, British Columbia, Canada)
  |   |    
  |   +———Davis IDA (Quebec, Canada – )
  |    
  AMM 
  |                
  |           +———Arthur STEVENSON (bef 1790 Ireland – )
  |           |
  |       +———Thomas STEVENSON (1808 Killyleagh Par, County Down, Ireland – 14 Feb 1896)
  |       |
  |   +———Dr. Hans STEVENSON (3 Apr 1853 Wakefield, Quebec, Canada – 4 Nov 1911 Wakefield, Quebec, Canada)
  |   |   |        
  |   |   |   +———James PRITCHARD (1783 Currin Par, County Monaghan, Ireland – 10 Jun 1880 Wakefield Twp, Quebec, Canada)
  |   |   |   |
  |   |   +———Ann PRITCHARD (1811 Clones, County Monaghan, Ireland – 10 Oct 1895)
  |   |       |    
  |   |       +———Judith FERGUSON (1788 Currin Par, County Monaghan, Ireland – 29 Dec 1852 Wakefield Twp, Quebec, Canada)
  |   |
  +———Dorothy Florence STEVENSON (2 Feb 1894 Wakefield, Quebec, Canada – 29 Aug 1966 Summerland General Hospital, Summerland, British Columbia, Canada)
      |    
      +———Mary Margaret CANN (10 Apr 1863 Ontario, Canada – 21 Feb 1924)