This page has a brief bio of Asa Kingsbury, which mentions Ward P Kingsbury as his brother and Phillip as his father. It talks about how the brothers settled in the area:

http://www.rootsweb.ancestry.com/~vermont/WindhamJamaica.htm...

(Scroll down to Asa B Kingsbury)

The same info appears in google books, here:
http://books.google.com/books?id=wWraIepDq4gC&pg=PA234&a...