HYDERABAD, SIR MIR OSMAN ALI KHAN, NIZAM OF (1886— ), was born on April 6, 1886, and succeeded his father, Sir Mir Mahbub Ali Khan, at his death on Aug. 29, 1911. Soon after accession he abandoned the traditional system of governing through a Diwan, . and for five years was his own prime minister. In 1919 he constituted an executive council with a president and eight other members, each in charge of one or more departments. During the World War he was an ardent sup porter of the British cause. He was promoted hon. lieutenant general in the British army, and in 1918 King George V. con ferred upon him the new and special title of Exalted Highness.