Alexander married Margaret Oxley on 20 Sep 1821 in Fleming County, Kentucky, United States. Margaret was born in 1799 in Kentucky, United States; and died. [Group Sheet] [Family Chart]

1. Mary Armstrong was born in 1823 in Kentucky, United States; and died.
2. John T. Armstrong was born in Mar 1826 in Fleming County, Kentucky, United States; and died.
3. Sarah Armstrong was born on 23 Aug 1836 in Kentucky, United States; died on 19 Feb 1915 in Poplar Plains, Fleming, Kentucky, United States; was buried on 21 Feb 1915 in Flemingsburg, Fleming, Kentucky, United States.
4. William Armstrong was born in 1839 in Kentucky, United States; and died.
5. Margaret Armstrong was born in 1844 in Kentucky, United States; and died.