Edward IV’s first marriage probably took place in the Warwickshire estates of Lady Eleanor Talbot, his bride, on 8 June 1461 (1). However, this ceremony was not to become public knowledge until twenty-two years later, by which time both had died. Indeed, Edward only revealed his change of status in September 1464, by then claiming to be (bigamously of course) married to Elizabeth Wydeville, when the Earl of Warwick made an effort to find him a foreign wife.
Edward IV has unwittingly inspired several later prominent people, for privacy or image reasons, but I have chosen John Lennon to illustrate the point. He had a relationship with Cynthia Powell from about 1959 and she was his first wife from 1962-8. As many of the Beatles’ fans were young and female, Lennon and his colleagues were encouraged, by their manager Brian Epstein, to keep their relationships secret for several years. Note that his opening marriage took place almost exactly five centuries after Edward’s and ended at a similar point in the relevant century.
(1) The Private Life of Edward IV, Ashdown-Hill, p.59.