We are probably quite distant cousins through Frederick and Mary Brunner of Worcester. My GGG Grandfather John was one of their sons just as your William was, or at least I think he was, I will need to dig further to make that connection. The Van Fossen name is quite helpful, they are connected to me through the Rittenhouse/Heilig line. I believe there was a Rittenhouse, Joseph perhaps, who was married to a Van Fossen. We could be related two ways if that is the case.