George Washington Parke-Custis 
George Washington was born in 1781. He died at the age of 76 in 1857.General Notes
SOURCES:
"Ancestors/Descendants of Royal Lines" (Contributors: Manuel Abranches de Soveral, Reynaud de Paysac, H.R. Moser <Burke Peerage>, L. Orlandini, O.Guionneau, L.B. de Rouge, E. Polti, A.Terlinden <Genealogy of the existing British Peerage, 1842>, L. Gustavsson, C. Cheneaux, and E. Lodge) http://geneastar.org.
They had a daughter named Mary Anne Randolph.
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Children
Mary Anne Randolph Custis
Mary Anne Randolph was born on October 1st, 1808 in Arlington Plantation, Alexandria, Fairfax, VA. She died at the age of 65 on November 5th, 1873 in Lexington, VA. She was buried in 1873 in Lexington, Rock Bridge, VA.