Well, I don't think you have thrown a monkey wrench into anything; you have just raised a question or perhaps a suspicion.
I have a distant cousin who descends from Joshua West but we have never been able to connect him to Edward West. I guess the answer to the connection lies somewhere in the records of the Eastern Shore counties.
I have looked for a connection but have never found one.
I descend from Edward and Martha's daughter Agnes who married John Roughton. John Roughton came to Tyrrell Co. from Elizabeth City Co., VA.
There were a lot of northeastern NC families who migrated there from the Eastern Shore, in addition to the West family, there are the Twifords, Scarboroughs, Tilletts, Thoroughgoods (various spellings), Aydlettes, and Melsons to name a few.
I have a great deal of info on Joshua West's descendants but nothing on his ancestors.
If I ever discover anything, I will certainly post it to several different boards.