The Earls of Lade were a dynasty of Norse jarls who ruled what is now Trøndelag and Hålogaland from the 9th century to the 11th century. Lade is sometimes called Hlathðr or Hlathir by historians.

Haakon Sigurdsson, known as Haakon Jarl, was the de facto ruler of Norway from about 975 to 995. Sometimes he is styled as Haakon the Powerful, though the Ágrip and Historia Norwegiæ give the less fla