Sturla Þórðarson: Skald, Chieftain and Lawman

"Sturla Þórðarson is one of only a handful of thirteenth-century
Icelandic historians to be known by name, and he is certainly one of the
most significant. A number of works may be traced directly to his
literary-cultural circle, notably Landnámabók (The Book of Settlements), Íslendinga saga (The Saga of Icelanders) and Hákonar saga Hákonarsonar (The Saga of King Hákon). Moreover, it is thought that Sturla was involved in the production of the legal text known as Járnsíða, as well as annals and, possibly, some of the Íslendingasögur (Sagas of Icelanders).
In addition to his role as author and compiler, Sturla Þórðarson was one of the most powerful men in Iceland."