Roderick McAulay (1842-1911) was married to Mary Ann Cowan. They had at least five children together: Henry William (b. September 29th, 1865), George (b. January 5th, 1867), Donald (b. August 31st, 1869), Ann or Sophie (b. June 5th, 1872), Charles J. (b. March 16th, 1880).