I wouldn't say that I was right. Those notes could be totally wrong for all I know. (But I hope, for the sake of the museum's reputation, that they're at least reasonably accurate.)
Most of what I know about that period, I learned from the Horatio Hornblower books ;-) and I have only visited England briefly a few times, and I don't recall actually visiting any of those towns. (Although now I'm thinking that I should add them to my wishlist of places I'd like to see, right alongside Slade and Westward Ho!)
I find both Thomas Slade's Wikipedia entry and the notes from the Maritime Museum tantalisingly brief. I would love to know more, not just about his family (although finding out that I was related to a genius would be pretty cool), but things like what, exactly, he did to make his ship designs so much better than previous ones. (Not that I expect to be called upon to design a ship of the line any time soon...)
Actually, I'm curious about pretty much everything, so thanks for the information about geography and etymology, too.
Greg