|Father:||Cornelius McDermott-Roe (?-c1807)|
|Spouse/Partner:||Andrew Harper (bef1800-aft1832)|
|Children:|| Mary Elizabeth Harper (c1828-1890)|
Virginia Harper (c1831-aft1850)
Mary McDermott-Roe was born in Pennsylvania, per her suspected daughter Mary Elizabeth Harper's 1880 census data. Mary was the daughter of the Cornelius McDermott-Roe who was involved in construction of the capitol in Washington, D.C., and his wife Mary.