Sobairce, son of Ebric and a great great grandson of Míl Espáine, was, according to medieval Irish legend and historical tradition, joint High King of Ireland with his brother Cermna Finn.
[1] The pair came to power after Cermna killed the previous incumbent, Eochaid Étgudach, in battle at Tara.
[2] Sobairce ruled the northern half from Dún Sobairce (Dunseverick in County Antrim), Cermna the southern half from Dún Cermna (which Keating identifies as Downmacpatrick in Kinsale, County Cork).
Sobairce died at the hands of Eochaid Menn, son of the king of the Fomorians.
The Lebor Gabála Érenn synchronises their reign with those of Laosthenes in Assyria and Rehoboam in Judah.