A death certificate would be the most logical document because that would have the names of his parents, birth date, where he was buried, etc.
http://www.portal.state.pa.us/portal/server.pt/community/dea...Be sure to check out the section on finding death certificates when the date of death is not known.
Also post to Philadelphia Message Board and be sure to post everything you don't know. The Philly board has members who actually live in the area and can give you some better information.
http://boards.ancestry.com/localities.northam.usa.states.pen...