William Pery, 4th Earl of Limerick

William Henry Edmund de Vere Sheaffe, 4th Earl of Limerick DL 16 September 1863 – 18 March 1929), styled Viscount Glentworth until 1896, was an Irish peer and British Army officer.

Limerick was the only child of William Pery, 3rd Earl of Limerick by his first wife, Caroline Gray. He was educated at Eton College.

Upon leaving school, he enlisted as an officer in the army, serving with the Rifle Brigade as a lieutenant between 1884 and 1890. He later moved to the 5th Battalion, Royal Munster Fusiliers, where he was promoted to captain. He was later made an honorary major in the same regiment. Upon the death of his father in 1896, he became the Earl of Limerick. He held the office of Deputy Lieutenant for the County of Limerick.

He married May Irwin in 1890, with whom he had three children, although they all predeceased him. He was succeeded in his titles by his half-brother, Edmund.