Hunterdon County New Jersey Queries

CORYELL/CORIEL
I am trying to obtain information on the origins of a Richard ROUNSAVELL who dies in 1702 in (then) Burlington County, New Jersey (now Hunterdon Co.). His death is listed in the NJ index, but I can't find anything else. Any ideas on how I can see where he was and how old he was and where he came from?

Brian E. Rounsavill