In the Norse Erex Saga, the sister of King Guivret, a friend of Erec. She could cure any wound, and she used her talents to heal Erec after he had been wounded in a joust with Kay.
Unnamed in Chrétien’s Erec, her character appears as either Filledamor or Guenteflur in Hartmann von Aue’s version.
Source
Erex Saga | 13th century