According to this well annotated source:
the parents of William Burgess are not documented and based totally on speculation or a misreading of records. How do we feel about cutting his parent ties?
I got the info from ancestry.com free trial and from a few e-mails from other people at the same dead end. If this is the same William Burgess I have to his leaving Germany as a Hessian soldier to fight for the British, then switching sides when he reaches America, and marries Hanna Newland.