Sturla Þórðarson (1214–84) was an Icelandic historiographer, politician, and writer, author of the contemporary saga Íslendinga saga and the kings’ sagas Hákonar saga Hákonarson (‘The Saga of Hákon Hákonarson’) and Magnúss saga lagabœtis (‘The Saga of Magnús the Law Reformer’). Sturla is also believed to have edited the redaction of Landnámabók (‘The Book of Settlements’) known as Sturlubók (‘Sturla’s Book’). He belonged to the Sturlung dynasty, one of the most prominent families in Iceland during the turbulent thirteenth century, and served as lawspeaker from 1251 to 1253. After being involved in the agreement that ended the Icelandic Commonwealth and made Iceland subject to the Norwegian king, Sturla fled to Norway, but then returned in 1271 and served as lawman for the whole of Iceland from 1272 to 1276 and then for the north and west of the country until 1282. Sturla’s writings are the main source on the life of his uncle Snorri Sturluson.