Fedlimid Rechtmar (Middle Irish: [ˈfɛðlʲimʲiðʲ ˈrɛxtwər]; "the lawful, legitimate" or "the passionate, furious") or Rechtaid ("the judge, lawgiver"), son of Tuathal Techtmar, was, according to medieval Irish legend and historical tradition, a High King of Ireland. His mother was Báine, daughter of Scál. He took power after killing his predecessor, and his father's killer, Mal mac Rochride.
The chronology of Geoffrey Keating's Foras Feasa ar Éirinn dates his reign to 104–113, that of the Annals of the Four Masters to 110–119. The Lebor Gabála Érenn synchronises his reign with that of the Roman emperor Marcus Aurelius (161–180). He ruled for nine or ten years before dying in his bed, and was succeeded by Cathair Mór. One of his sons, Conn Cétchathach, would succeed Cathair. Two other sons, Fiacha Suighe, ancestor of the Dal Fiachrach Suighe, and Eochaid Finn, are named in medieval sources.
|Fíachu Finnolach||Eithne Imgel|
|Conn Cétchathach||Eochaid Finn||Fiachra Suighe|
|Dal Fiachrach Suighe|
|Art mac Cuinn||Achtan||Macnia mac Lugdach||Saruit||Ailill Aulom||Sadb||Conaire Cóem|
|Lugaid mac Con|
|Uí Néill||Connachta||Eóganachta||Dál Riata|
- Dictionary of the Irish Language, Compact Edition, Royal Irish Academy, 1990, pp. 502, 503
- R. A. Stewart Macalister (ed. & trans.), Lebor Gabála Érenn: The Book of the Taking of Ireland Part V, Irish Texts Society, 1956, p. 331
- Annals of the Four Masters M110-119
- Reverend P. Power & Eleanor C. Lodge, The Life of St. Declan of Ardmore, Kessinger Publishing, 2004, p. 8. ISBN 1-4191-6980-7
- Geoffrey Keating, Foras Feasa ar Éirinn 1.40
- Alice Stopford Green, Making of Ireland and Its Undoing 1200-1600, Ayer Publishing, 1975, p. 42. ISBN 0-8369-6720-8.