), a descendant of the legendary hero Conall Cernach
, was a king of Ulster
who became High King of Ireland
in the 4th century
. He gained the High Kingship by overthrowing Muiredach Tirech
, but only lasted a year before he was overthrown by Muiredach's son Eochaid Mugmedon
. He married Céindi and had one son, Condla, by her. Condla was ancestor to George the first of England, Scotland and Wales; linking Cáelbad as a relation by blood to the modern royal family.