Isaiah Hixson d. 1722 Philadelphia, Pennsylvania

It is said that Isaiah Hixson was born in Dumbarton, Scotland in 1656; married Ellen Douglas (1670-1703); died at Philadelphia in 1722; and was buried in Quaker Burial Ground, Arch Street, Philadelphia, Pennsylvania.

Can anyone point me to any official records such as a marriage, death, or burial record?Or a mention in a book?

I'm writing an article on the New England Hixsons.I'd like to mention some other early U.S. Hixsons including Isaiah.He is mentioned on some web sites but I need to be able to cite some official source.

I also administer the Hickson/Hixson/Hixon DNA project at Family Tree DNA; the project site is
http://www.familytreedna.com/public/hicksonhixsonhixonhttp://www.familytreedna.com/public/hicksonhixsonhixon

Any pointers to sources for Isaiah would be very welcome.adTHANKSvance!