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