+———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)  |      Bonnie Joycelin STEVENSON ( – living)  |      +———Joyce Madeline HARRISON (5 Jun 1930 Aylwin, Quebec, Canada – 21 May 2000 Ottawa, Ontario, Canada)