Otto Beit was born in Hamburg, Germany, the younger brother of Alfred Beit, into the Jewish family of an affluent Hamburg trader. He went to England in 1888, where he joined the stockbroking firm of Wernher, Beit & Co., in which his brother Alfred Beit, was a partner. He became a naturalised British citizen in 1896. In 1890 he left for South Africa to gain experience in the diamond industry. He remained for six years and played an active role in the development of Rand Gold Mines and became a member of Hermann Eckstein's firm, H. Eckstein & Co.
Extracted from Wikipedia.