The True Tragedy of Richard III a source for his play, though the majority tend to favour this judgement. Geoffrey Bullough treats "The True Tragedy" as a "probable source" for "Richard III", citing several commonalities (as when, in both plays, Richard calls for a horse on Bosworth Field, yet refuses to flee the battle) — though Bullough admits that the nature of the plays' relationship is "not clear." The uncertainty in dating has allowed a few commentators to propose a reversed priority, and to argue that the author (or reviser) of "The True Tragedy" may have borrowed from Shakespeare's play. Shakespeare appears to have known of
Ricardian (Richard III) of the White Boar was renamed The Richard III Society in 1959. In 1980, Prince Richard, Duke of Gloucester, became the society’s Patron. (Richard III was Duke of Gloucester before ascending the throne, therefore he was before his accession (Prince) Richard, Duke of Gloucester). In 1986 the society established the Richard III and Yorkist History Trust, a registered charity, to advance research and publication related to the history of late medieval England. The society publishes a scholarly journal, The Ricardian. In 2012 the society, working in partnership with the University of Leicester and Leicester City Council, exhumed a skeleton at