The bird raised in hell...

Hi,
I want to know the meaning of Welsh proverb, "Y cyw a fegir yn uffern, yn uffern y myn drigo."
It can be translated "The bird reared in hell, there he will choose to dwell."

Do this proverb have to do with the Welsh history?

My opinions about the meaning:

1. We are more comfortable with the familiar, even if it's a miserable existence. Like a caged animal who feels safe in his cage and is afraid to leave.

2. Or it could mean a child raised around evil will choose evil when he growns up.

I don't know anything about Welsh history.