Sigurd I of Orkney was a successful soldier who conquered most of northern Scotland in the 9th century. Following a fever-pitched victory in A.D. 892 against Maelbrigte of Moray and his army, Sigurd decapitated Maelbrigte and stuck his opponent's head on his saddle as a trophy. As Sigurd rode with his trophy head, his leg kept rubbing against his foe's choppers. The teeth opened a cut on Sigurd's leg that became infected and led to blood poisoning. Sigurd died shortly thereafter.