Born ca. 1866 in [Lewes and Rehoboth Hundred], Sussex Co., Delaware

Mary's age in the census records: in 1870, age 4; in 1880, age 13.
Mary appears under the surname Coursey in the 1880 census.
In 1870 Mary resided in the household of Eliza (-----) Coursey, widow of John Coursey.
In 1880 Mary resided in the household of Eliza (-----) Coursey, widow of John Coursey.

1870 - U.S. Census, Delaware, Sussex Co., Lewes and Rehoboth Hundred, Page No. 12 [=652 verso], 87-90, 14 Jul 1870
1880 - U.S. Census, Delaware, Sussex Co., Lewes and Rehoboth Hundred, E.D. 53, Page No. 50 [=614B], 11-11, 18 Jun 1880