Isaac Mann and Abigail Ogden

Can anyone help me document the marriage and children for Isaac Mann (1751-1837) and Abigail Ogden (1778-1837)?They were both baptized at St John's parish in Elizabethtown, New Jersey.In addition, they are both buried in the church cemetery as is one daughter, Sarah (1778-1737). I have been unable to find proof of additional children.However, I believe that they had at least two more children, Isaac and Abigail.

Any documentation is appreciated.

John White