Here is what I think: We know for sure:
1. The DNA of the Descendants matches the DNA of the Descendants of Stephen Osborne b. 1634 that married Sarah Stansborough.
2. Stephen's Brother is John Osborne b. 1631 married to Mariam Rebecca Hand. It is John's Descendants that make the match, that believe that James Osborne that married Ann Carter is the Parents of Jonathan Osborn b. 1701 in Va. that Married Gretta Holman.
3. The DNA IS THE PROOF: that they belong to John Osborne b. 1631 and Mariam Rebecca Hand.
4. So what about the fraud? 1. I think the genealogist/ or researcher could have miss-spoke! If maybe he ment the women were born in Warwickshire, Warwick, England and came to America. This is the "only way" the information could fit. Because at the time John Osborne b. 1631 and Mariam Rebecca Hand's children were young, so they were not back in England at the time. They would not have left their kids to go have the last child in England and then for him to do the same! I believe the researcher/genealogist must have miss spoke! Having said this, we know for sure the DNA matches the other brother's DNA.
Thomas Osborn b. 1594/5 m. Mary Goatley
Children: Thomas Jr., Jeremiah, John 1631, Stephen 1634, Richard died age 6mo., Joseph, Rebecca, Increase, Benjamin.
John Osborn 1631 m. Mariam Rebecca Hand
James Osborne m. Ann Carter
Jonathan Osborn m. Gretta Holman
Ephraim Osborn Sr. m. Elizabeth Howard 1714-1785
Enoch Osborne Sr. m. Jane Hash