This does not appear to be a very active bb, but I'll give it a try anyway.
Looking for the parents of Mary Losee who m. Richard Crego, 1 Feb 1754, Rumbout, NY.LDS shows her parents as Laurens and Rachel DeLange Losee.She is not listed as their child in Andrew Provost's Early Settlers of Bushwick, Long Island, NY - but I find his numbering system very difficult to follow.However, there is no mention of a Crego in the book.
Here's what I have on her:
REF: New York Record, Vol. 69, p. 285: Will dated 1806, probate May 13, 1815. "Richard Crego, son of Stephen and Margaret (Dutcher) Crego, (made his "earmark" at Crum Elbow 1742).His will was dated Canaan, Columbia Co., NY, Aug 7, 1806; probated May 13, 1815.He m. Feb. 1, 1754, Mary Losee at Rumbout NY with Chauncey Graham V.D.M. officiating.Children named in his will were John, Richard, Joseph, David, George, Chauncey, Peggy (Margaret, wife of Jabez Crippen), Mary, wife of William Ventress, son Stephen deceased who left children, Anna, wife of John Stranahan, Stephen Jr., Cyrus and Durlin.The widow Molly survived him.The son Abraham is not mentioned in the abstract.