James Butler 1st Duke of Ormonde
 James Butler 1st Duke of Ormonde KG PC (19 October 1610 – 21 July 1688) was an Anglo-Irish statesman and soldier known as Earl of Ormonde from 1634 to 1642 and Marquess of Ormonde from 1642 to 1661. Following the failure of the senior line of the Butler family he was the second of the Kilcash branch to inherit the earldom. His friend the 1st Earl of Strafford caused him to be appointed the commander of the Cavalier forces in Ireland.