was the leader of the first invasion in Ireland. Cesair was the daughter of Bith and granddaughter of Noah. Cesair was denied admission to the Ark, so she left 40 days before the Flood arrived.

Cesair arrived at Dun na mBarc (in Co. Cork), Ireland, with 50 other women, and three men. She married Fintan Mac Bochra. The three men were to divide the women among them, as well as dividing Ireland into three. They hoped they could populate Ireland, but two of the men died.

When the fifty women all turned their attention to Fintan, he saw that they were placing too much responsibility to him, so he fled from Ireland, by turning himself into a salmon. Cesair died from a broken heart. Without a single man on the isle, the other women also perished