Who was the half-brother of Sweyn Haakonsson that participated in the conquest of English by King Canute the Great?
Eiríkr Hákonarson Eric Haakonsson (960s – 1020s) was Earl of Lade, Governor of Norway and Earl of Northumbria. He was the son of Earl Hákon Sigurðarson and brother of the legendary Aud Haakonsdottir of Lade. He participated in the Battle of Hjörungavágr, the Battle of Svolder and the conquest of England by King Canute the Great.
Swithhelm of Essex Swithhelm succeeded King Sigeberht II after he, along with his brother Swithfrith, murdered him. They accused him of being too friendly toward Christians. In 662, however, he was persuaded to convert to Christianity by Aethelwald, king of East Anglia. After his death in 664, he was succeeded by his cousins Sighere and Sebbi.