Erik was buried at Varnhem together with his father and his father’s second wife. According to the Magnúss saga lagabœtis, Erik called himself "Eirek allz-ekki" because he had no title. Only when Magnus III became king did Erik change his title and call himself "Duke".
His father"s skeleton shows that he was about 172 cm long, while Erik was a few inches longer but with a much thinner build.
His muscular attachments were poorly developed. In the vertebrae and sternum there were some signs of pathological changes, and he would have been 25 years old when he died in 1275.