Islendingabók
The Islendingabok, often translated as the Book of Icelanders, is a medieval Icelandic text written by Ari Thorgilsson. It is considered one of the most important historical sources for early Icelandic history, particularly the settlement period and the establishment of the Icelandic Commonwealth. Ari, who was a grandson of a chieftain who participated in the political events of the time, wrote the book in Old Norse.
The primary focus of the Islendingabok is to chronicle the history of Iceland from its settlement around
Ari's work is notable for its relatively sober and factual approach, distinguishing it from some other sagas