Robert Allen is also my ancestor and I have been working on proving his ancestry. Believe he was s/o Seth Allen and Anna Soper. Land records and some other related families point to this being correct. His line probably goes back to George Allen. George Allen Ralph Allen & Susannah ? Ebenezer allen & Abigail Hill Seth Allen & first wife Elizabeth Butler Seth Allen b. 16 Jan 1734, Dartmouth, Mass & Anna Soper b. 6 Feb 1735. How are you related ? My line is thru Robert Allen's daughter Sarah Allen & Soloman Soper.