Room above stove?

I have a 2nd floor bedroom right above my coal stove on 1st floor. The bedroom is 12'x16'. Would I need more than 1 register & does it need a blower fan? Thanks.

I doubt it. You may find yourself blocking the vent.

Thanks coaledsweat, I was thinking of a 6"x12" register on the opposite wall of the stove. I do have a return from the 2nd floor that blows on- the stove. Once you start cutting you have to live with it that's why I want them strategically placed. If I put a register over the stove it is not a good place in the bedroom. Thats why I was thinking of using 2. Thanks again.