1 July 2012

Updated design and filled in biographical information at top of the page

30 May 2008

Added portrait to index page

1 May 2008

Added title graphic and additional birthplace and death place information.

Source: Michael K. Jones and Malcolm G. Underwood, ‘Beaufort, Margaret , countess of Richmond and Derby (1443–1509)’, Oxford Dictionary of National Biography, Oxford University Press, 2004