This is an Icelandic name. The last name is patronymic, not a family name; this person is referred to by the given name Ari fróði.
Ari Þorgilsson (1067–1148 AD; Old Norse: [ˈɑreˈθorˌɡilsˌson]; Modern Icelandic: [ˈaːrɪˈθɔrˌcɪlsˌsɔːn]; also anglicized Ari Thorgilsson) was Iceland's most prominent medieval chronicler. He was the author of Íslendingabók, which details the histories of the various families who settled Iceland. He is typically referred to as Ari the Wise (Ari hinn fróði), and according to Snorri Sturluson was the first to write history in Old Norse.[1][2]
Ari was a part of the Haukdælir family clan and studied in the school in Haukadalur as a student of Teitur Ísleifsson (the son of Ísleifur Gissurarson, first bishop of Iceland). There he became acquainted with Classical education. His writings clearly indicate that he was familiar with Latin chronicler traditions, but at the same time he is widely regarded as excelling in the Icelandic oral storytelling tradition.
It is believed that Ari later became a Christian priest in Staður by Ölduhryggur, now known as Staðastaður, but otherwise little is known about his life, despite the fact that he is one of the very few medieval writers who wrote down his family history.[3][4]
Íslendingabók is the only work that is absolutely proven to have been written by him, but he is accredited with numerous articles of knowledge and is believed to have had a major part in the writing of Landnámabók, which chronicles the settlement of Iceland.
Ari was early on regarded as an important author. In Iceland's First Grammatical Treatise, written around 1160 AD, he is referred to with respect as an exceptional man, since the tradition of writing was not firmly established at the time.
^Mark Nuttall Encyclopedia of the Arctic -2012 Page 926 "The settlement of Iceland started around AD 870. An early Icelandic historian, Ari Þorgilsson, wrote in his Islendingabók (Book of the Icelanders) from 1122 to 1133 that the first settlers encountered a few Irish monks."
^Lonely Planet Iceland -Lonely Planet, Fran Parnell, Brandon Presser - 2010 Page 32 1742203469 "Iceland Saga, by Magnús Magnússon, offers an entertaining introduction to Icelandic history and literature, and explains ... scholar Ari Þorgilsson (Ari the Learned), and the detailed Landnámabók, a comprehensive account of the settlement."
^Rory McTurk A Companion to Old Norse-Icelandic Literature and Culture 2008 -- Page 302 "Much of what we know about the conversion of Iceland is drawn largely from the account written by the priest and historian Ari Þorgilsson in the first half of the twelfth century "
^Mark F. Williams -The Making of Christian Communities: In Late Antiquity and Middle Ages - 2005 Page 95 "Several sources contain information about the process of Christianity in Iceland, the oldest being the Book of the Icelanders (Íslendingabók) by Ari þorgilsson, from 1125-30."
AriÞorgilsson (1067–1148 AD; Old Norse: [ˈɑre ˈθorˌɡilsˌson]; Modern Icelandic: [ˈaːrɪ ˈθɔrˌcɪlsˌsɔːn]; also anglicized AriThorgilsson) was Iceland's...
conflict with existing inhabitants. On the basis of Íslendingabók by AriÞorgilsson, and Landnámabók, histories dating from the twelfth and thirteenth centuries...
according to Norse tradition. He inherited the throne of Romerike. AriThorgilsson in his Íslendingabók calls him Eystein Fart (Old Norse: Eystein fret/fjert)...
Íslendingabók by the scholar AriThorgilsson, the Landnámabók (the land seizure book) by an unknown author, but probably with Ari's involvement, the anonymous...
Auðr (or Aud) was probably first recorded by the Icelander AriÞorgilsson (1067 – 1148). Ari was born not long after the death of his great-grandmother...
1262–1264 when Iceland was taken over by the Norwegian crown. According to AriThorgilsson, the earliest Icelandic laws were modeled on those from the Norwegian...
(d. 1142) Adela of Normandy, countess of Blois (approximate date) AriThorgilsson, Icelandic chronicler and writer (d. 1148) John Taronites, Byzantine...
Icelanders") by Icelandic chronicler AriÞorgilsson, was written between 1122 and 1133, some time after the event. Ari writes of "Christian men", titled...
minister Agnar Helgason, anthropologist Ari Brynjolfsson, physicist AriÞorgilsson, documentarian, chronicler Ari Trausti Guðmundsson, geologist, explorer...
Íslendingabók (written in the early twelfth century by the Icelandic priest AriÞorgilsson) Yngvi Tyrkja konungr 'Yngvi king of Turkey' appears as the father of...
as late as the 1020s. In the 12th century, the Icelandic historian AriThorgilsson in his Landnámabók referred to Rollo as Ruðu jarl (earl of Rouen),...
earliest sagas written about the founding of Iceland by a priest called AriÞorgilsson working in the early 12th century) Kjalnesinga saga Kormáks saga Króka-Refs...
sought to spread Catholicism (pre-Great Schism) among the population. AriÞorgilsson, in his historical work Íslendingabók, recounts that the society was...
female elected to the presidency of any republic. Prominent writers were AriÞorgilsson, father of Icelandic historical writing; Snorri Sturluson, author of...
Iceland was first recorded by AriThorgilsson in the early 12th century. Historian Gunnar Karlsson states that AriThorgilsson's narration is "unbelievable...
himself converted to Christianity. Thorgeir's story is preserved in AriThorgilsson's Íslendingabók. "Thorgeir Ljosvetningagodi - Conversion to Christianity"...
Alfonso X of Castile (1221–1284), King of Castile, León and Galicia AriThorgilsson, (1067–1148), Icelandic medieval chronicler Banban the Wise, Irish...
(d. 1142) Adela of Normandy, countess of Blois (approximate date) AriThorgilsson, Icelandic chronicler and writer (d. 1148) John Taronites, Byzantine...