+———Arthur STEVENSON (bef 1790 Ireland – )              |          +———Hans STEVENSON (1812 Ireland – aft 1871)          |      +———Arthur STEVENSON (1853 – )      |   |          |   +———Elizabeth DRENNAN (1812 Ireland – aft 1871)      |  +———Benjamin STEVENSON (1887 – 1964)  |   |      |   +———Eleanor Isabella “Isabella” PATTERSON  |      Douglas Clair STEVENSON (1931 – 1997)  |      +———Delia MCKITRICK (1892 – 1972)