Gissar Polvaderson

Gissar Polvaderson was the King of Iceland in the 12th century. He was enormously fat, had foul breath and his face was covered in boils and pustules. He dined exclusively on whale blubber and drank hot mead all day. Wolvern, the Duke of Trondheim, arranged a marriage between his daughter, Princess Freydis, and King Gissar; however, the king never received his bride as she decided to stay in Lowith with Henrik. (PROSE: Dark Horizons)

Behind the scenes
In reality, Iceland never had a king at this time, being a commonwealth from when it was settled in the 9th century until it became a dependency of Norway in the 13th century.