[Source] Eist Tuirseach was a jarl of Skellige during the reign of his brother, King Bran. Eist was an uncle to Crach an Craite. He became the king of Cintra via his impromptu marriage to Queen Calanthe. Some time after, he also gained the crown of Skellige. He ruled together until 1263, but there were no children from that union. He was killed at the Battle of Marnadal during the Nilfgaardian invasion of Cintra. He is described as being a sinewy warrior with a dark face, an aquiline nose and very white teeth.