Much of this early Taylor genealogy is from a 1985 book by Mary (Taylor) Brewer, From Log Cabins to the White House. It supposedly links James Taylor I (d. 1698, VA) with Taylors in England. If this genealogy is proven then only Mary Brewer has the proof as no one else has been able to find it.
The early Taylor genealogy in England by Mary Brewer has been discounted by many including Ann Blomquist, Nathaniel Lane Taylor & Kenneth Harper Fenton (all professional genealogists) because there are no records to support the genealogy..
Their supposed son James was possibly the Dr. James Taylor who married Elizabeth Underwood.
Their supposed son John was possibly the John who married Elizabeth, widow of Tobias Horton.