Alexander Michael Charles Drogo Montagu, Viscount Mandeville (born 13 May 1993) is the eldest son and Heir Apparent of the 13th Duke of Manchester. May 13 is the 133rd day of the year in the Gregorian Calendar (134th in leap years). ... 1993 (MCMXCIII) was a common year starting on Friday of the Gregorian calendar and marked the Beginning of the International Decade to Combat Racism and Racial Discrimination (1993-2003). ... The Most Noble Alexander Charles David Drogo Montagu, 13th Duke of Manchester (born December 11, 1962) is a British hereditary peer, the son of the Angus Charles Drogo Montagu, the 12th Duke of Manchester. ...