Serendipity language was by Horace Walpole in 1754. In a letter he wrote to his friend Horace Mann, Walpole explained an unexpected discovery he had made about a (lost) painting of Bianca Cappello by Giorgio Vasari by reference to a Persian fairy tale, "The Three Princes of Serendip". The princes, he told his correspondent, were "always making discoveries, by accidents and sagacity, of things which they were not in quest of". The name comes from "Serendip", an old name for Sri Lanka (Ceylon), hence "Sarandib" by Arab traders. It is derived from the Sanskrit "Siṃhaladvīpaḥ" (Siṃhalaḥ, Sri Lanka + dvīpaḥ, island).
Princes in the Tower becoming king, Henry married the princes' eldest sister, Elizabeth of York, to reinforce his claim to the throne. Not wanting the legitimacy of his wife or her claim as heiress of Edward IV called into question, prior to the marriage he had repealed the "Titulus Regius" which had previously declared the princes (and Elizabeth) illegitimate. Markham suggests the princes were executed under Henry's orders between 16 June and 16 July 1486, claiming that it was only after this date that orders went out to circulate the story that Richard had killed the princes, and that the princes' mother, Elizabeth Woodville,