Re: Maggie Shryock b. 1850, Maryland
To the best of my knowledge:
Margaret Shryock was born 1848 in Maryland, daughter of Christian Derr Shryock and his first wife, whose name I do not know.Christian was a widower in 1850 when he married a second wife, so I presume his first wife probably died in childbirth when Margaret was born.
Christian Derr Shryock was the son of Jacob Daniel Shryock and Ann Baltzell.
Christian Derr Shryock married second Rebecca Ann Worthington Brown.
according to the Maryland Genealogical Society Bulletin, Vol. 19, No. 1, Winter 1978, p.8
"A Brown Family of Maryland," by Eleanor Mac Callahan
Rebecca Ann Worthington Brown, b. 12 Nov 1828,
m. Christian Shryock, a widower with 1 child.
[Christian and Rebecca had] 3 children
1. Henrietta Shryock m. George Chamberlain
2. Leonora Shryock, m. Samuel Tregallis.1 child, Samuel Staley Tregallis m. Helen A. Pagen-stecher.1 son.
3. William Brown Shryock
which does not mention Christian's daughter, Margaret, except as a child of no name, but Margaret does appear with Christian and Rebecca in the 1860 census of Baltimore.
and in the 1850 Baltimore census, Margaret is living with William Heuitt and his wife Ann.
Ann is Margaret's grandmother, mother of Christian Derr Shryock, who married William Heuitt after Jacob Daniel Shryock died.
Margaret and John Plumley appear in the 1880 census in Washington, D.C., with two sons, Perry and John.
hope this helps,