Adolf Frederick, O.F. (Original Foodie)

Thank you, Wikipedia:

Adolf Frederick, king of Sweden, died of digestion problems on 12 February 1771 after having consumed a meal consisting of lobster, caviar, sauerkraut, smoked herring and champagne, topped off with 14 servings of his favourite dessert: semla served in a bowl of hot milk.^[37] He is thus remembered by Swedish schoolchildren as “the king who ate himself to death.”^[38]

To be fair, he was known as a really nice dude and great dad.  However, it was the foodie in him that got him.  Poor guy.