The Davy Back games are named after him, right.

[Okay, not totally ignorant, alright.]

Davy Jones is the keeper of the Locker, Mister Strawhat. It's where the souls of dead sailors go if they don't make it to heaven or hell. They say a lot of things - he commands a number of evil spirits of the sea, he has many wierd and mystic abilities, and so on. Most everyone at home considers him a legend unless you're really superstitious.

Hearing he's real is... something...