Editors. "Lord Chamberlain Stanley tried for complicity with Perkin Warbeck". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=13937, accessed 09 December 2013.]
Sir William Stanley had originally been a Yorkist, and was favoured by Edward IV and Richard III. However, by 1485, he had decided to support Henry Tudor's bid for the throne, and was instrumental in the defeat of Richard III at Bosworth, for which the new king Henry VII rewarded him with the post of Lord Chamberlain. However, he was then arrested and, on 6 Feb. 1495, tried for complicity in Perkin Warbeck's conspiracy, admitting to the crime of treason.