Tuatha Dé Danann figure, sister of the river-goddess Boann; mother of Fráech by the mortal Connacht prince Idath per the Táin Bó Fraích opening. The "Bé Find / Bébinn" name attaches to multiple Tuatha Dé Danann figures across the Irish tradition (a Bébinn appears in the Acallam na Senórach as a different giantess-figure); this is specifically the Boann-sister, mother of Fráech.