James Butler, 5th Marquess of Ormonde

James George Anson Butler, 5th Marquess of Ormonde was born on 18 April 1890 and died in 1949. He was the son of James Arthur Wellington Foley Butler, 4th Marquess of Ormonde. From his birth until the death of his uncle, the 3rd Marquess, he was styled Mr. James George Anson Butler. Following this, he was styled Earl of Ossory, until his father's death in 1943, upon which he became the fifth Marquess of Ormonde. He married Hon. Sybil Inna Mildred Fellowes, daughter of William Henry Fellowes, 2nd Baron de Ramsey and Lady Rosamond Jane Frances Spencer-Churchill, on 23 February 1915. They had two children:

• James Anthony Butler, Viscount Thurles (1916–1940)
• Lady Moyra Rosamond Butler (1920–1959)