Saint Femia (also spelled Femme, Feme, and Eufemia; fl.
Femia's mother's name was Dediva (also called Editua, Dedi, Deidi, Deighe, Deidiu, Deaga or Mediva), daughter of Tren, son of Dubhthach moccu Lughair, who was Chief Ollam of Ireland and royal poet of King Lóegaire mac Néill.
Dediva's other children were Saint Senan of Laraghabrine, son of Fintan; Saint Diarmaid the Just, son of Lugna; Saint Caillin, son of Niata; Saint Felim of Kilmore, who was another son of Carill and Femia's full brother; Saint Daigh of Inniskeen, who was another son of Carill and Femia's full brother; St.Mainchín of Corann, son of Collan of Corann; and Senchán Torpéist, another Chief Ollam of Ireland.
The Martyrology of Tallaght describes her as "Femme, beautiful, ample, safe, Cairell’s dear modest daughter".
The Martyrology of Donegal gives her feast day as 17 September.