Hi Jen,
Very nice to hear from you.
Yes, there is a connection as I have found with most of the Carlyons of Cornwall.
Here goes:
Sampson Carlyon b. 13/3/1749/50 and Thomasine Evans married 30/10/1774 and had 8 children that I am aware of.
One of them, another Sampson, married Sarah Ann Waters. His brother William Carlyon married Jane Williams.
The connection between myself and your husband begins with Sampson & Thomasine Carlyon.
I have a fair amount on the Carlyons and have also found several other researchers/rellies from my direct line. There is a couple of contacts from your husbands line as well.
I'm happy to share any information that may interest you.
Kind regards,
Wendy