Question: In what year did the Britain Burma Society founded under the distinguished patronage of  Earl Mountbatten of Burma, Sir Hubert Rance whose formal prefix Sir was strictly governed by law and custom as an honorific address?

full_context: Document 1: Sir: Sir is an honorific address used in a number of situations in many anglophone cultures. The term can be used as a formal prefix, especially in the Commonwealth, for males who have been given certain honours or titles (such as knights and baronets), where usage is strictly governed by law and custom.
Document 2: Statue of the Earl Mountbatten, London: The statue of the Earl Mountbatten is an outdoor bronze statue of Admiral of the Fleet Louis Mountbatten, 1st Earl Mountbatten of Burma, located on Mountbatten Green, off Horse Guards Road, Whitehall, London, England. The sculptor was Franta Belsky and the work was unveiled in 1983.
Document 3: Moroccan British Society: The Moroccan-British Society (MBS) was created on 23 February 2003. Its goal is ‘to provide means and allow Moroccans and British people to acquire a better mutual understanding of their civilizations, cultures and political, academic, scientific, economic, financial, and commercial institutions so as to promote and foster their friendly relations and their cooperative ties in every domain.’ Lalla Joumala is president of the MBS since its inception.
Document 4: Hubert Rance: Major General Sir Hubert Elvin Rance (1898–1974) was the last Governor of British Burma between 1946 and 1948, during the transition from Japanese to British colonial administration. Later he became Governor of Trinidad and Tobago.
Document 5: Queen's Champion: The feudal holder of the Manor of Scrivelsby in Lincolnshire, England, has, since the Norman Conquest in 1066, held the manor from the Crown by grand serjeanty of being The Honourable The King's/Queen's Champion. Such person is also the Standard Bearer of England.
Document 6: Queen's Counsel: A Queen's Counsel (postnominal QC), or King's Counsel (postnominal KC) during the reign of a king, is an eminent lawyer (usually a barrister) who is appointed by the Queen to be one of "Her Majesty's Counsel learned in the law." The term is also recognised as an honorific. Membership exists in various Commonwealth jurisdictions around the world, while in some other jurisdictions the name has been replaced by one without monarchical connotations, such as "Senior Counsel" or "Senior Advocate". Queen's Counsel is a status, conferred by the Crown, that is recognised by courts. Members have the privilege of sitting within the Bar of court.
Document 7: Britain–Burma Society: The Britain Burma Society (BBS) is a society founded in 1957 under the distinguished patronage of Earl Mountbatten of Burma, Sir Hubert Rance (formerly Governor of Burma), Miss Dorothy Woodman, the Rt. Hon. Malcolm MacDonald, the Rt. Hon. Arthur Bottomley and others.
Document 8: Debasement (knighthood): Debasement is the formal term for removal of a knighthood or other honour. The last knight to be publicly debased was Sir Francis Mitchell. More recent examples include Sir Roger Casement, whose knighthood was canceled for treason during the First World War, and Sir Anthony Blunt, whose knighthood was withdrawn in 1979. The most recent debasements centre on the fallout from the banking crisis at the end of the first decade of the twenty-first century. Examples include Sir Fred Goodwin, the former Chief Executive of the Royal Bank of Scotland, who lost his knighthood in 2012 over his role in the bank's near-collapse in 2008 and Sir James Crosby, the former Chief Executive of HBOS.
Document 9: Sayyid: Sayyid (also spelled Syed, Saiyed, Seyd, Sayed, Sayyad, Sayyed, Saiyid, Seyed, Said and Seyyed) (] , Arabic: سيد‎ ‎ ; meaning "Mister") (plural "Sadah" Arabic: سادة‎ ‎ , "Sāda(h)" , also spelled "Sadat") is an honorific title denoting people (Sayyid for males, Sayyida for females) accepted as descendants of the Islamic prophet Muhammad through his grandsons, Hasan ibn Ali and Husayn ibn Ali combined Hasnain, sons of Muhammad's daughter Fatimah and his son-in-law Ali (Ali ibn Abi Talib).
Document 10: Mountbatten Medal: The IET Mountbatten Medal is awarded annually for an outstanding contribution, or contributions over a period, to the promotion of electronics or information technology and their application. The Medal was established by the National Electronics Council in 1992 and named after Louis Mountbatten, The Earl Mountbatten of Burma, Admiral of the Fleet and Governor-General of India. Since 2011, the medal has been awarded as one of the IET Achievement Medals.
Document 11: Earl Mountbatten of Burma: Earl Mountbatten of Burma is a title in the Peerage of the United Kingdom. It was created in 1947 for Rear Admiral Louis Mountbatten, 1st Viscount Mountbatten of Burma, the last Viceroy of India. The letters patent creating the title specified the following special remainder:
Document 12: Mountbatten Institute: The Mountbatten Institute (formerly known as the Mountbatten Internship Programme) is an organization based in New York and London dedicated to fostering work experience and cultural exchange by placing international graduate students abroad to earn postgraduate certificates and degrees. Named in honour of Louis Mountbatten, 1st Earl Mountbatten of Burma and benefacted by his eldest daughter Patricia, 2nd Countess Mountbatten, the organization was founded in 1984.
Document 13: Countess Mountbatten of Burma: Countess Mountbatten of Burma is a peerage in the United Kingdom encompassing certain of the wives and daughters of the Earl Mountbatten of Burma. The family seat for the position is at Newhouse Manor, near Ashford, Kent.
Document 14: Colonel (title): The honorary title of Colonel is conferred by some states in the United States of America and certain military units of the Commonwealth of Nations. The origins of the titular colonelcy can be traced back to colonial and antebellum times when men of the landed gentry were given the title for financing the local militia without actual expectations of command. This practice can actually be traced back to the English Renaissance when a colonelcy was purchased by a lord or prominent gentleman but the actual command would fall to a lieutenant colonel, who would deputise for the proprietor.
Document 15: Singh: Singh is a title, middle name or surname, which originated in India. Derived from the Sanskrit word for lion, it was adopted as a title by certain warrior castes in India. It was mandated by Guru Gobind Singh for all Sikhs. It was later adopted by several castes and communities. As a surname or a middle name, it is now found throughout the Indian subcontinent and among the Indian diaspora, cutting across communities and religious groups, becoming more of a title than a surname.
ground_truth: 1957