Does anyone know about the parents of Margaret Cooper who married William Slater (of Loudoun Co. VA ) on Feb 4, 1829 in Washington, D.C. They had a daughter Sarah Jane about 1832. William and Margaret Slater are in an unnamed town in Loudoun Co. VA in the 1850 census. Margaret seems to die prior to 1860 as she disappears from the census.
The Slater's owned land near Lovittsville. Isaac C. Slater, a son of William and Margaret Slater, owned a farm in this area. The family moved to Washington, D.C. by 1880.
I would like to learn of the parents of William Slater as well as of Margaret Cooper.