Sanguine; rather boring for the prince of excess

In my own reading I’ve come across very little lore about sanguine compared to many other princes. He seems to have not much in the way of a strange backstory or unique quirks like many other princes do (Hermeus being scraps of magnus’ plans, Nocturnal being related to the vastness within oblivion , boethia’s connections to Lorkhan, and I could go on and on here). It seems very amusing to me at least to entertain the idea that the prince of hedonism is in fact the most bland of the princes. It emphasizes the the dichotomy essential to many other princes.

Well now that the spiel is over, am I terribly wrong about sanguine and I’ve missed much of his lore?