Sedna was a the name of two legendary High Kings of Ireland.
1. Sedna son of Airtri was a great-grandson of Eber Finn. He ruled in the 10th or 14th century BC and was killed by his own son, Fiacha Finscothach.
2. Sedna Innaraigh ("of the wages"), son of Breisrigh, was the first king in Ireland to pay his soldiers. He ruled in the 7th or 10th century BC
