My Allen Line is rather large and not every branch has been fully explored. It is possible your Allen's are tied in, because of their geography. Many of my Allen's were from the Connecticut, western Masschusetts, and Vermont areas. Especially when you mention Suffield, CT..but I cannot show a link to any of the people you give. There are others who may know more about the Vermont lines or possible links. If I come accross anything I will let you know.