The Anglo-Saxon Chronicle, under the year 547 states: "In this year Ida assumed the kingdom, from whom arose the royal race of the Northumbrians, and reigned twelve years, and he built "Bebanburh" (Bamborough), which was at first inclosed by a hedge, and afterwards by a wall." Ida captured the fortress of "Din Guairi" from the Britons. It would later be renamed Bamburgh. He defeated their leader who was named Outigern. Ida was a powerful warrior and king according to early sources. He is seen to have brought the north (north of the River Humber) under his protection. Ida would have been an . But at Ida's death his overkingship did not pass to his successor. At the time Ida ruled, Bernicia would have had British kingdoms to their north and west. Most these kingdoms were conquered at some point by the Bernicians. No records of the individual kingdoms or the battles they fought mention Ida. To the south was the Anglo-Saxon kingdom of Deira. 