Robert Plunkett, 5th Baron Dunsany (d. 1559) was an Anglo-Irish nobleman.
He was the son of Edward Plunkett, 4th Baron of Dunsany and Amy de Bermingham. He succeeded to the title in 1521 when his father was killed assisting the Earl of Surrey in putting down a rebellion by the O'Connor and O'Carroll families.[1]
He married firstly Eleanor Darcy, daughter of Sir William Darcy of Platten. Of their many children only two survvived infancy: Christopher , who succeeded as 6th Baron, and Elizabeth, who married Walter FitzGerald, a son of the Earl of Kildare.[2]
Dunsany married secondly to Jenet Sarsfield who had already buried two husbands and was to have six in all. They cannot have been married more than two years when Dunsany died in March 1559; their two sons died in infancy. Despite the brevity of the marriage Jenet took great pride in her rank; she preferred in later life to be called Lady Dunsany and was buried under that title.[3]