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. 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.