Trying to break through some walls and could use some ideas. The family of Ellis and Rachel (Chase) Doty are well-documented in Caroline, Tompkins, NY, just online provide goodies like land records. My problem is I'm apparently descended from their youngest son, also called Ellis. He's much harder to find. He marries Amanda Landon in 1829 and they bounce between NY and her home state of PA until divorce (probable desertion ca. 1837, attempted to file 1839 in Tioga County PA, she remarried in 1838 in PA).
Census records for 1840 are inconclusive. I even feel like I've exhausted the resources at the Salt Lake Family History Library (in-person research). The connection of Ellis Doty b. 1808 to Ellis and Rachel Doty is "probable" by the Mayflower Society so if they can't find any more who knows.