Alan Mathison Turing was born in London on June 23, 1912, the son of an Englishman who worked as a magistrate in the city of Madras (now Chennai) in India, which at the time was part of the British Raj. Sara Turing, Alan’s mother, had traveled back to England to give birth at a time of growing political unrest in India. After Alan’s birth, his mother returned to Madras to join her husband, leaving Alan and his older brother, John, to be brought up by a foster family in the town of Hastings on the south coast of England. During the first eight years of his life, Alan Turing saw his parents two
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