Background
He was born at Crickstown in County Meath, the elder son of Nicholas de Bernevall, whose wife was a Clifford.
He was born at Crickstown in County Meath, the elder son of Nicholas de Bernevall, whose wife was a Clifford.
He was appointed King"s Serjeant in 1422 and held that office until 1434 when he became second justice of the Court of King"s Bench (Ireland). He was appointed Chief Justice the following year and with one short gap served in that office until his death in October 1446. He was Vice-Treasurer of Ireland in 1430, 1432 and 1435.
Butler–Talbot feud
In 1444 Thorndon fled from Ireland, unable to bear any more dissension.
He attempted to appoint Bernevall as his Deputy, but Ormond promptly declared the appointment illegal. Numerous accusations of wrongdoing were made against Bernevall, but no action was taken, either because he enjoyed the confidence of the Crown, or because the Ormond–Talbot feud was at last dying away.
Bernevall died two years later, still in office.
While some judges like the members of the Cornwalsh family, which produced two Chief Barons in turn, were supporters of Ormond, Bernevall was a strong supporter of the Talbot faction.