WILLIAM married MARGARET STRAIN on 15 Sep 1852 in Toronto, ON, CAN. MARGARET (daughter of JOSEPH STRAIN and ELIZABETH LITTLE) was born in 1830 in Monaghan Co., NIR; died in 1903. [Group Sheet] [Family Chart]

1. JOSEPH RUSK ARMSTRONG was born in 1869 in Markdale, Grey Co., ON, CAN; died on 9 Sep 1929 in Markdale, Grey Co., ON, CAN.
2. MARGARET JANE ARMSTRONG was born in 1857 in Markdale, Grey Co., ON, CAN; died in 1933 in Edmonton, AB, CAN.
3. MARK ARMSTRONG was born in 1853 in Markdale, Grey Co., ON, CAN; died in 1933 in Markdale, Grey Co., ON, CAN.
4. ELIZABETH ARMSTRONG was born in 1856 in Markdale, Grey Co., ON, CAN; died in 1935 in Toronto, York, ON, CAN.
5. WILLIAM A. ARMSTRONG was born in 1860 in Markdale, Grey Co., ON, CAN; died in 1907 in Markdale, Grey Co., ON, CAN.
6. SARAH ARMSTRONG was born in 1862 in Markdale, Grey Co., ON, CAN; died in 1883 in Markdale, Grey Co., ON, CAN.
7. SOPHIA ARMSTRONG was born in 1865 in Markdale, Grey Co., ON, CAN; died in 1936 in Markdale, Grey Co., ON, CAN.
8. TERESA ELLEN ARMSTRONG was born in 1867 in Markdale, Grey Co., ON, CAN; died in 1942 in Markdale, Grey Co., ON, CAN.
9. GEORGE WHITFIELD ARMSTRONG was born in 1872 in Markdale, Grey Co., ON, CAN; died in 1933 in Peterborough, ON, CAN.
10. CHARLES EDGAR ARMSTRONG was born in 1876 in Markdale, Grey Co., ON, CAN.
11. HERBERT JAMES ARMSTRONG was born in 1878 in Markdale, Grey Co., ON, CAN; died in 1940 in Markdale, Grey Co., ON, CAN.