Joseph married Isabella McKennit on 29 Dec 1845 (Presbyterian) in Longfield West, Tyrone, Northern Ireland. Isabella was born in 1821 in County Donegal, Northern Ireland; died in 1887 in Donegal, Perth county, Ontario, Canada; was buried in Greenwood Cemetery, Milverton, Perth county, Ontario, Canada. [Group Sheet] [Family Chart]

1. Alexander Acheson was born on 2 Nov 1848 in New York City, New York, United States; was christened on 4 Jul 1849 in New York City, New York, United States; died on 6 Oct 1897 in Rosenfeld, Manitoba, Canada; was buried in Morris, Manitoba, Canada.
2. Weir Acheson was born on 23 Jul 1850 in County Tyrone, Northern Ireland; was christened on 17 Jan 1851 in County Tyrone, Northern Ireland; died on 6 Aug 1923 in Redlands, California, United States; was buried on 9 Aug 1923 in Hillside Memorial Park - Redlands, San Bernardino County, California, United States.
3. Ellen Acheson was born on 4 Mar 1852 in Longfield West, Tyrone, Northern Ireland; died about 1860.
4. Samuel James Acheson was born on 9 Aug 1853 in Longfield West, Tyrone, Northern Ireland; died on 21 Dec 1926 in Milverton, Perth county, Ontario, Canada; was buried in Greenwood Cemetery, Milverton, Perth county, Ontario, Canada.
5. Elizabeth Acheson was born on 28 Apr 1854 in Longfield West, Tyrone, Northern Ireland.
6. Arabella Acheson was born on 5 Aug 1857 in Longfield West, Tyrone, Northern Ireland; died on 1 Sep 1923 in Redlands, California, United States; was buried on 7 Sep 1923 in Redlands Cemetery, Redlands, California, United States.