John (son of Philip)was born in NJ in 1765.The next time I find John, is in 1787, when at 22 yrs. old. he marries in Loudoun County, VA. The following year, 1788, his son William is born in MD.
Also, there is no Philip Michael in the 1800 census.However, Philip does show up on Deakins list, indicating he was in Allegany County, MD in 1787.
Therefore, I can guess about when they left Loudoun County, but there is a twenty plus year span from when they left NJ and located to Loudoun County.
I have several Mary Michael, but none who were born in the 1700's.My Philip had two daughters, Sophia and Elizabeth (which I have not proven at this point). I would be happy to share any information that I have.You can email at FLmmmm@aol.com