Nicholas Purcell, 13th Baron of Loughmoe (1651 – 4 March 1722) was the son of James Purcell of Loughmoe and the maternal nephew of James Butler, 1st Duke of Ormonde. A member of the King's Privy Council, Purcell was the right-hand man to Patrick Sarsfield, Earl of Lucan. In 1687 Nicholas Purcell raised a troop of horse to support King James II — they were called the "Yellow Horse," probably from the colour of the Regiment's cornets, as was customary for the period. Nicholas fought at the Battle of the Boyne and at the Battle of Aughrim, and was a signatory to the Treaty of Limerick. He did not flee to Europe after Limerick but remained in Ireland to fight for the rights of Roman Catholics.