in Synge Street, Dublin, on 26 July 1856 to
George Carr Shaw (1814–85), an unsuccessful grain merchant and sometime civil servant, and Lucinda Elizabeth Shaw, née Gurly (1830–1913), a professional singer. He had two sisters, Lucinda Frances (1853–1920), a singer of musical comedy and light opera, and Elinor Agnes (1855–76).
Shaw's birthplace, Dublin