The Chronicle of the Kings of Alba says that Domnall reigned for four years, matching the notices in the Annals of Ulster of his brother's death in February 858 and his own in April 862.
Na Crónica dos reis de Alba dise que Domnall reinou durante catro anos; segundo os Anais do Ulster desde a morte de seu irmán en febreiro de 858 ata abril de 862.