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Congalach Cnogba
Former High King of Ireland
Conghalach Cnoghbha was High King of Ireland, according to the lists in the Annals of the Four Masters, from around 944 to 956. Congalach is one of the twelve "kings of Ireland" listed in the hand of the original scribe of the Annals of Ulster. Wikipedia
Died: 956 AD
Deposed date: 954 AD
Previous office: High King of Ireland (943 AD–954 AD)