I just wanted to add some additional information re. Frederick Freeman Allen and his children.
I've recently discovered the information regarding him marrying a Hannah Harris, but I also have an indication that he may have been previously married to a "Clarissa", but I don't have any sources to back this up yet.
I have his date of birth as Dec. 17, 1787 (and photos of his tombstone).
Betsy Allen - b 1810 Randall B. Allen - b 1811 Martin Allen - b 1817 John Henry Allen - b 1818 William Spencer Allen - b 1819 Seth Allen - b 1824