Data source is the 1990 book, "Moomaw-Mumma-Mumaw-Mumaugh Genealogy" compiled by Robert Austin Moomaw (deceased).
In the 1900 census, a grandson named LeRoy Hart, age 4 is living with David's parents. David Hart is listed as widowed. In the 1910 census. LeRoy is living with his father and his father's 2nd wife named Annie E. Annie is listed as having given birth to one child and one child is living, but there is no other child living with them.
By 1920 & 1930, David is married
Father:Jacob HART (b. 21 JUL 1840, PA - d. 5 AUG 1909) Mother:Anna MUMMA (b. 10 MAR 1842, Lancaster Co., PA - d. 25 OCT 1915, Lancaster, Lancaster Co., PA)