James Wandesford Butler, 1st Marquess of Ormonde, was an Irish nobleman and politician. He was the second son of John Butler, 17th Earl of Ormonde and Frances Susan Elizabeth Wandesford. He was born at Kilkenny castle on 15 July 1774.

John Butler, 17th Earl of Ormonde, 10th Earl of Ossory (1740–1795) was an Irish peer and Member of Parliament (MP). He became a Protestant in 1764. He was an Irish MP, representing Gowran between 1776 and 1783, and Kilkenny City between 1783 and 1792. In 1791, his right to the peerage was acknowledged in the Irish House of Lords and he became the 17th Earl of Ormond.