Please answer the following question: - caption is walter madeley in 1928 - successor is john william sampson christie colin fraser steyn harry gordon lawrence henry - party is labour - death date is 12 may 1947 - predecessor is frederic boydell creswell harry gordon lawrence henry allan fagan thomas - office is leader labour minister of social affairs minister of post and telegraph of services and public works the south african labour party minister of - primeminister is jan christiaan smuts jan christiaan smuts j.b.m. hertzog - term end is 1946 1945 1943 1928 - term start is 1928/1933 1939 1941 1925 - birth date is 28 july 1873 - nationality is south african - image is walter madeley.jpg Given the details above, guess who could this information be about.
A:
walter madeley