Michael Caine was born Maurice Joseph Micklewhite Jr. on 14 March 1933, in St Olave's Hospital in Rotherhithe, London. His father, Maurice Joseph Micklewhite Sr., was a fish market porter, while his mother, Ellen Frances Marie Burchell, was a cook and charwoman. His father had Irish ancestry, and was a Catholic.
Caine had an elder maternal half-brother named David William Burchell, and a younger full brother, Stanley Micklewhite. He grew up in Southwark, London, and during the Second World War, he was evacuated to North Runcton near King's Lynn in Norfolk. After the war, his father was demobilised, and the family were rehoused by the council in Marshall Gardens at the Elephant and Castle in a prefabricated house made in Canada, as much of London's housing stock had been damaged during the Blitz in 1940–1941.