Do you know if Abraham had any siblings or where in NJ he was born?
I have an Elizabeth Letts b. Oct. 15, 1793. I believe she was born in South Amboy, Middlesex Co., NJ. to Lewis and Mary Letts. She married her older step-brother about 1810. They moved to Lyon Twp., Oakland Co., Michigan in 1832. I know that other Letts families soon followed to the same area. Their are both Dunlaps and Letts buried in the South Lyon Cemetery.
Elizabeth's mother, Mary, married Robert Dunlap about 1810 and died 9 May, 1814; believe she is buried with Lewis Letts in Ulysses, Tompkins Co., NY.