Cearbhall was King of Leinster in Ireland. In 902 he conquered Dublin from the Vikings and secured peace in the land for the next 20 years. Three of his daughters (all ancestors of Frida Rage) married Norsemen - one of which was to become the ancestor of the famous Thorfinn Karlsevne, who sailed with Leif Erikson from Greenland to North America around the year 1000 AD.
Cearbhall var konge av Leinster i Irland. I 902 erobret han Dublin fra vikingene og sikret fred i landet de neste 20 år. Også en annen irsk konge med samme navn hadde en datter som ble giftet inn i den samme familien.
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