This is not my line of the Pettits- but I have notes from a book about the descendants of Thomas Pettit, son of Seth, who m. Martha Deuel that shows that Thomas & Martha Deuel had
Jonathan who had sons Noah, Allen, Seth, and the oldest son, John Guthon Pettit (b. 2-6-1818 /d. 2-2-1893) who m. Elizabeth Briggs.John G. and Elizabeth Briggs had 1. Phebe E. (b. abt 1843); 2. Ruth A. (b. abt 1846) m.an Unknown Rosa and had Nellie Rosa (b. abt 1863); and 3. Jabez G. (b. abt1848).
The book was on microfilm.
Hope this helps.
Most of my information on this line was entered into my computer but merely because it could be a branch of the John Pettit of Sharon or my line the Thomas Pettit m. Christian Mallows family(in the NY/CT/NJ areas).I never could figure out who was Seth's father.