What is "ulfljotr"

Úlfljótr brought law to Iceland and is regarded by some as Iceland's first lawspeaker. In around 927-930 AD Úlfljótr was sent to Norway by a group of chieftains to study law and culture and bring back to Iceland sufficient understanding to help establish Iceland's legal framework and form of government. And while he was in Norway, where he stayed for around three years, Grimur Geitskor, Úlfljótr's half-brother, made a survey of Iceland to find the best place for the establishment of the Althing. Úlfljótr is commemorated with the first law enacted at the Alðing, Úlfljót's Law, with the Lake Úlfljótsvatn and by the Úlfljótur Law Review.