Saint Felim (also called Feilim, Feidlimid, Feidhlimidh, Felimy, Feidhilmethie, Feidlimthe, Fedlimid, Fedlimidh, Phelim, Phelime), an Irish Christian hermit and priest, was born, probably in Kiennacta Breagh, County Meath in the mid sixth century.
His mother was Dediva (also called Editua or Dedi or Deidi or Deighe or Deidiu or Deaga or Mediva), daughter of Tren, son of Dubhthach moccu Lughair, who was a Chief Ollam of Ireland and royal poet of King Lóegaire mac Néill.
The tradition that he was a monk in the monastery in Slanore near Crossdoney is well founded and attested.
[3] Felim became a hermit living near Kilmore, County Cavan, where he later founded a monastery (Cill Mór /Big Church).
The Ulster Plantation papers of 1608 give a list of fairs in county Cavan which includes- "One fayre holden att Killmore yearly the third day of August being Saint Phelime's Day".