Haakon Sigurdsson

Haakon Sigurdsson (Old Norse: Hákon Sigurðarson [ˈhɑːˌkon ˈsiɣˌurðɑz̠ˌson], Norwegian: Håkon Sigurdsson; c. 937–995), known as Haakon Jarl (Old Norse: Hákon jarl), was the de facto ruler of Norway from about 975 to 995. Sometimes he is styled as Haakon the Powerful (Old Norse: Hákon jarl hinn ríki), though the Ágrip and Historia Norwegiæ give the less flattering name Hákon Illi, that is, Haakon the Bad. He is also known as Hàkon Sigurðarson, Earl of Hlaðir.

Source: Wikipedia — https://en.wikipedia.org/wiki/Haakon_Sigurdsson