I have a Margaret b. abt 1729, who was the widow of Frederick Probasco, who married a George Hoagland in 1757. The dates you give for George match what I have. They had 8 children: Abraham, Henry, Derrick, Margaret, Elsie, Sarah, Annie and Osie. I do not have any additiona info on Margaret except she died in 1809. I have been trying to determine her surname, but have found nothing so far.