Folio 309r of the Book of Kells (Trinity College Dublin), c. 800.
Key myth
Cormac's Glossary says she was a goddess of poets and that there were three Brigids: of poetry, of healing and of smithcraft. The saint of the same name, Brigid of Kildare, has overlapping associations.
Where sources differ or caution applies. Whether St Brigid continues a goddess cult is debated; the saint's earliest lives are the earliest sources for her.