Editors. "Frederick William IV of Prussia suffers a stroke". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18348, accessed 24 May 2013.]
King Frederick William IV of Prussia suffers a stroke, at the age of 62, leaving him partly paralysed and unable to carry out his governmental duties. From now until his death in 1861, his brother William serves as Regent.