+———Stewart Wilson WILLIAMS ( – living)  |      Frasier Adair WILLIAMS (Saskatoon, Saskatchewan, Canada – living)  |              |       +———Thomas Peter CAIRNS  |       |  |   +———William “Bill” CAIRNS  |   |   |      |   |   +———Pearl Irene PETERSON  |   |  +———Joan Louise CAIRNS (Saskatoon, Saskatchewan, Canada – living)      |                              |                   +———Arthur STEVENSON (bef 1790 Ireland – )      |                   |      |               +———Hans STEVENSON (1812 Ireland – aft 1871)      |               |      |           +———Thomas STEVENSON (1846/7 Ireland – 22 Jul 1887)      |           |   |          |           |   +———Elizabeth DRENNAN (1812 Ireland – aft 1871)      |           |      |       +———Thomas Andrew “Rouge” STEVENSON (22 Dec 1872 Quebec, Canada – )      |       |   |          |       |   +———Anna NEALE ( – bef 1881)      |       |      |   +———Albert Maynard STEVENSON (Sep 1901 Wakefield, Quebec, Canada – )      |   |   |              |   |   |   +———Thomas WILSON (abt 1836 Ireland – 1917 Harris, Saskatchewan, Canada)      |   |   |   |      |   |   +———Rachel Letitia “Lettie” WILSON (Sep 1872 Quebec, Canada – )      |   |       |              |   |       |   +———William BOONE (1799 Londonderry, Ireland – 11 Nov 1880 Cantley, Hull Twp, Quebec, Canada)      |   |       |   |      |   |       +———Rachel BOONE (1838 Cantley, Quebec, Canada – 13 Jul 1934 Harris, Saskatchewan, Canada)      |   |      +———Thomasena STEVENSON ( – dec.)          |              +———Annie Allison HUNTER (abt 1896 – )