+———Arthur STEVENSON (bef 1790 Ireland – )
              |
          +———Hans STEVENSON (1812 Ireland – aft 1871)
          |
      +———Arthur STEVENSON (1853 – )
      |   |    
      |   +———Elizabeth DRENNAN (1812 Ireland – aft 1871)
      |
  +———Arthur Findlay “Findlay” STEVENSON (10 Nov 1877 – 1950)
  |   |    
  |   +———Eleanor Isabella “Isabella” PATTERSON
  |    
  Robert Arthur STEVENSON (27 Nov 1924 Wakefield, Quebec, Canada – 7 Sep 2003 Ottawa, Ontario, Canada)
  |    
  +———Edith Jane SHOULDICE (3 Sep 1886 – 1973)