Editors. "Thomas, Duke of Norfolk, is sent back to the Tower on suspicion of treason". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15129, accessed 16 April 2014.]
Thomas, Duke of Norfolk, is sent to the Tower of London on suspicion of treason. This charge is confirmed a few weeks later, on 28th September, when the Ridolfi Conspiracy is uncovered, and Norfolk is ultimately executed on 2nd June the following year.