+———John Lauchlin MCDONALD (11 Sep 1861 Alexandria, Ontario, Canada – 1 Oct 1927 Lochiel, Ontario, Canada)  |      Laughlin MCDONALD   |              |       +———James WEIR (1790 Scotland – 6 Apr 1866 Lochiel, Ontario, Canada)  |       |  |   +———John WEIR (26 Apr 1834 Kenyon, Ontario, Canada – bef 21 Jul 1890)  |   |   |      |   |   +———Margaret MACPHERSON (1795 Scotland – )  |   |  +———Mary Ann WEIR (7 May 1870 Kenyon, Ontario, Canada – 13 Jan 1936 Alexandria, Ontario, Canada)      |              |   +———Duncan CAMERON (1793 – )      |   |      +———Catherine CAMERON (1826 Greenfield, Ontario, Canada – 6 Jan 1897 Greenfield, Ontario, Canada)          |              +———Margaret MCDOUGALD (1803 – 1888)