A changeling is Fae that has taken the place of a baby. Sometimes, it wasn’t just the babies that they took the place of. Sometimes it was mothers, and we’ll talk about that in a second.
Brigit i.e. a poetess, daughter of the Dagda. This is Brigit the female sage, or woman of wisdom, i.e. Brigit the goddess whom poets adored, because very great and very famous was her protecting care. It is therefore they call her goddess of poets by this name. Whose sisters were Brigit the female physician [woman of leechcraft,] Brigit the female smith [woman of smithwork]; from whose names with all Irishmen a goddess was called Brigit. Brigit, then, breo-aigit, breo-shaigit ‘a fiery arrow’.