Lugaid Luaigne, son of Finnat Már, was, according to medieval Irish legend and historical tradition, a High King of Ireland

High King of Ireland

The High Kings of Ireland were sometimes historical and sometimes legendary figures who had, or who are claimed to have had, lordship over the whole of Ireland. Medieval and early modern Irish literature portrays an almost unbroken sequence of High Kings, ruling from Tara over a hierarchy of...

. He came to power after killing his predecessor, and his father's killer, Bresal Bó-Díbad, and ruled for five or fifteen years, before he was killed by Congal Cláiringnech. The Lebor Gabála Érenn

Lebor Gabála Érenn

Lebor Gabála Érenn is the Middle Irish title of a loose collection of poems and prose narratives recounting the mythical origins and history of the Irish from the creation of the world down to the Middle Ages...

synchronises his reign with that of Ptolemy X Alexander I

Ptolemy X Alexander I

Ptolemy X Alexander I was King of Egypt from 110 BC to 109 BC and 107 BC till 88 BC.He was the son of Ptolemy VIII Physcon and Cleopatra III. In 110 BC he became King with his mother as co-regent, after his mother had deposed his brother Ptolemy IX Lathyros. However, in 109 BC he was deposed by...

 (110-88 BC) in Egypt. The chronology of Geoffrey Keating

Geoffrey Keating

Seathrún Céitinn, known in English as Geoffrey Keating, was a 17th century Irish Roman Catholic priest, poet and historian. He was born in County Tipperary c. 1569, and died c. 1644...

's Foras Feasa ar Éirinn dates his reign to 140-135 BC, that of the Annals of the Four Masters

Annals of the Four Masters

The Annals of the Kingdom of Ireland or the Annals of the Four Masters are a chronicle of medieval Irish history...

to 199-184 BC.

Although presented as an ancestor of the Eóganachta

Eóganachta

The Eóganachta or Eoghanachta were an Irish dynasty centred around Cashel which dominated southern Ireland from the 6/7th to the 10th centuries, and following that, in a restricted form, the Kingdom of Desmond, and its offshoot Carbery, well into the 16th century...

 in later medieval genealogies, Lugaid is regarded by T. F. O'Rahilly

T. F. O'Rahilly

Thomas Francis O'Rahilly was an Irish scholar of the Celtic languages, particularly in the fields of Historical linguistics and Irish dialects. He was a member of the Royal Irish Academy.-Biography:He was born in Listowel, County Kerry, Ireland...

 as one of several late emanations of Lugaid Loígde

Lugaid Loígde

Lugaid Loídge "Lugaid of the Calf Goddess", also known as Lugaid mac Dáire, was a legendary King of Tara and High King of Ireland. He is a son of Dáire Doimthech, a quo the Dáirine, and gives his epithet to their principal royal sept, the Corcu Loígde...

, ancestor of the Corcu Loígde

Corcu Loígde

The Corcu Loígde , meaning Gens of the Calf Goddess, also called the Síl Lugdach meic Itha, were a kingdom centered in West County Cork who descended from the proto-historical rulers of Munster, the Dáirine, of whom they were the principal royal sept...

.