This triadic deity is well attested throughout northern Europe (more generally as the Matres or Matrones), not just in Celtic areas, and was similar to the Fates, Furies, Norns, and other such figures.
Dea Matrona, a singular form of Matronae or Matrones, mother goddesses attested in the Roman era among Celtic and Germanic regions; see Matres and Matrones
DEA | DEA list of chemicals | Willie O'Dea | Dea Matrona | Battle of Dysert O'Dea | Pat O'Dea | O'Dea | N'Dea Davenport | Matrona of Chios | Matrona of Barcelona | Matrona | Jones alongside Judith O'Dea | Dysert O'Dea Castle | Darrell O'Dea |