ARI FRODHI THORGILSSON (ARIO, IL SAVIO, son of THORGILS). — Priest and the first Icelandic historian, b. in 1067, d. in 1148. He wrote the history of Iceland from 874 to 1120 in the Islandingābok, or
Historical Book of Iceland, of which only the most recent recension has been preserved, composed no earlier than 1134. The «editio princeps» was printed at Skallholte in 1688, and the complete Latin edition at Copenhagen in 1733.