Piers Butler, 8th Earl of Ormond, 1st Earl of Ossory also known as Red Piers, was from the Polestown branch of the Butler family of Ireland. In the succession crisis at the death of Thomas Butler, 7th Earl of Ormond he succeeded to the earldom as heir male, but lost the title in 1528 to Thomas Boleyn. He regained it after Boleyn's death in 1538.

Thomas Butler, 7th Earl of Ormond PC was the youngest son of James Butler, 4th Earl of Ormond. He was attainted, but restored by Henry VII's first Parliament in November 1485, and the statutes made at Westminster, by Edward IV, which declared him and his brothers traitors, were abrogated.