Sir Nicholas de la Hay was the 4th Feudal Baron of Errol. He was also Sheriff of Perth, Constable of Perth Castle, and an MP. He was the son of Gilbert de la Hay and Ideonea Comyn.
Sir Nicholas swore fealty and homage to King Edward I of England on 10 July and 28 August 1296, and was summoned to Parliament at St Andrews on 5 March 1304.
Sir Nicholas married a woman named Joan. They had the following known issue:
Gilbert of Errol
Nicholas, Rector of Fossoway
John
Hugh of Locharwart.