+———Arthur STEVENSON (bef 1790 Ireland – )
          |
      +———Thomas STEVENSON (1808 Killyleagh Par, County Down, Ireland – 14 Feb 1896)
      |
  +———John T. STEVENSON (26 Mar 1847 Wakefield, Quebec, Canada – Saskatchewan, 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)
  |    
  Thomas Lindsay STEVENSON (16 Jan 1876 Quebec, Canada – 28 May 1877 Quebec, Canada)
  |        
  |   +———Foster MONCRIEF (abt 1801 Ireland – 25 Dec 1885)
  |   |
  +———Jane MONCRIEF (abt 1838 – 29 Mar 1891)
      |    
      +———Mary IRWIN (abt 1799 Ireland – 13 Feb 1881 Wakefield, Quebec, Canada)