Icelandic historians seem to have started writing about their country’s past toward the end of the 11th century. Sæmundr Sigfússon, trained as a priest in France, wrote a Latin history of the kings of Norway, now lost but referred to by later authors. The first Icelander to use the vernacular for historical accounts was Ari Þorgilsson, whose Íslendingabók (or Libellus Islandorum [The Book of the Icelanders]) survives. It is a concise description of the course of Icelandic history from the beginning of the settlement (c. 870) to 1118. Ari seems to have written this book about 1125, but before that date he may already have compiled (in collaboration with Kolskeggr Ásbjarnarson) the so-called Landnámabók (“Book of Settlements”), which lists the names and land claims of about 400 settlers. Because this work survives only in 13th- and 14th-century versions, it is impossible to tell how much of it is Ari’s. Both books gave the Icelanders a clear picture of the beginning of their society; both works served to stimulate public interest in the period during which events recounted in the sagas of Icelanders (see below) are supposed to have taken place. Other factual accounts of the history of Iceland followed later: Kristni saga describes Iceland’s conversion to Christianity about the end of the 10th century and the emergence of a national church. Hungrvaka (“The Appetizer”) contains accounts of the lives of the first five bishops of Skálholt, from the mid-11th century to the third quarter of the 12th century; the biographies of other prominent bishops are in the Biskupa sǫgur. Though some of these have a strong hagiographical flavour, others are soberly written and of great historical value. The period from about 1100 to 1264 is also dealt with in several secular histories, known collectively as Sturlunga saga, the most important of which is the Íslendinga saga (“The Icelanders’ Saga”) of Sturla Þórðarson, who describes in memorable detail the bitter personal and political feuds that marked the final episode in the history of the Icelandic commonwealth (c. 1200–64).