Mary Black, daughter of William Young Black and Jane Johnston, born 25 Apr 1825 in Lisburn, Antrim, Ireland. Died 29 Nov 1846 in Nauvoo, Hancock, Illinois, United States. Married John McDonald (born 1821 in Lisburn, Antrim, Ireland) in 1845 in Painsville, Ohio.
Child of Mary Black and John Mc Donald: William Johnston McDonald, born 4 Jul 1845 in Nauvoo, Hancock, Illinois, United States. Married Mary Etta Stringham on 6 Sep 1863 in Nauvoo, Hancock, Illinois, United States. Died 5 Mar 1899 in Molen, Emery, Utah, United States; buried 7 Mar 1899 in Ferron, Emery, Utah, United States.