Mary Elizabeth Harper (c1828-1890)/Ancestors

Mary Harper is suspected to be the daughter of Andrew Harper and Mary McDermott-Roe.

Harper Family
Andrew Harper was born in Ireland. His paternal ancestry is believed to have originated in England a few generations back. Andrew is suspected to be the father of Mary Elizabeth Harper, as he is the only Harper who can be found in the 1830 census of Washington, D.C. Andrew's wife was Mary McDermott-Roe.

McDermott-Roe
If Mary McDermott-Roe is the mother of Mary Elizabeth Harper, then she must have been born in Pennsylvania, per Mary Elizabeth Harper's 1880 census data. There was at least one McDermott-Roe family in Philadelphia during this time period. There was also a Cornelius McDermott-Roe who was involved in construction of the capitol in Washington, D.C.