I also have an Allen connection to Franklin County and wonder if your gg-grandfather could be a brother to my gg-grandmother Sarah Allen. She was b. in NY and m. Franklin Townsend, also b. in NY. Their daughter Florence Townsend, b. 1846, NY, m. Addison Webber Weeks between 1871-1874, probably in Malone, Franklin, NY. Their children were b. between 1874-1881 in Malone. Do you know the names of your gg-grandfather's siblings?