Morgenstern writes in The Princess Bride that Buttercup's father isn't particularly handsome, so nobody is exactly certain how he fathered the most beautiful woman on earth. He and his wife, Buttercup's mother, fight constantly and keep score of who wins. He often loses. Buttercup's father seems to be a kind man; he decides to leave Westley an acre in his will. He's also a horrendous dairy farmer and his milk is only drinkable because of the care that his cows receive from Westley.