| Judging by when you posted this I am guessing you have long sice found a multitude of medieval games. One I am aware of is tarot a game similar to spades. Basically it is high card wins style, I played it on Hoyle's Card Games 5 for PC.
I also found this when I google'd medieval card games I hope any of this is helpful to you.
"May those who love us, love us. And those who hate us, may God turn their hearts. And if he doesn't turn their hearts, may he turn their ankles so we'll know them by their limping."
Grateful am I to have a sword in which to defend myself at all times, blessed am I for the days I need not use it.