I have thought the same thing for years-never been able to prove it though! I am through Mordecai and have seen records for all the children you listed except Joseph. Where is there info on Joseph? The family's arrival in WV had to be after 1798 as that is when Mordecai was born and he always listed NC as his birthplace. Mordecai died in Feb or March of 1873 but there is no death record to be found. I have a book written by a descendent of Patience Roles who married Benjamin Halsted and she believes Mordecai and Patience were siblings. They named a son Mordecai Halsted. Please email me directly at email@example.com
-would love to discuss this with you further!
Melinda Roles Jacquier in Placentia, CA