+———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)