I descend from Daniel who then had a son Levi. I lived in Newbury most of my life so I know were everything is. We are actually having a family geneaology day in Jully http://www.newbury375.org/
If you visited the cemetary next to the Jackman-Willet house you should have found a few Jackmans and their relatives burried their. Up the street there is also a hidden cemetary with more family graves.