Your welcome is isn't likely that your Bakers would have both Nelson and Seth without being related. Nelson is unusual but Seth is very unusual. I have a theroy they were diabetic. My g-great Grandfather Luther Baker Mesnard died of kidney failure as is common among diabetics. His son took insulin but his mother was also a Baker. That was when marrying first cousins was thought to be fine. The Mesnards before Luther lived very long. I don't think the Bakers did.
How far back can you trace your Bakers back and to where?