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 on account of the uniform of the men.