I I am also doing research on my DeLong Family History. So far ,I have found a Beatrice DeLong b. 5 Feb. 1917 in Romulus, Seneca Co., NY. She married my grandfather, Daniel Lawrence Rosecrans b. 5 Mar. 1913 in Hector, Schuyler Co., NY. Her father was Frank DeLong b. 11 Feb. 1879 in Ferrisville Co., VT. Her mother was Cecil May Hilkert b. 6 Dec. 1896 in Varick, Seneca Co., NY. Frank DeLong's father was George DeLong md. Sarah Sell dates unk.