Name me

Richard Cornish?

Here we go again. Rejection and I go hand in hand. Two guesses.

Giant Wrath or Poldark

With the state of things around me, I had no choice but flee,
If you don't know a lot, then you don't know me.

I'm a Cornishman and I went to sea.
If you don't know a lot, then you don't know me.
My staff might help you to guess my name,
Not Jenny, my wife (too stubborn a dame).