Christian VIII of Denmark declares the Danish State indivisible and heritable by females, thus excluding the Duchies of Schleswig-Holstein from becoming a separate province, with resultant tension in Germany.
Editors. "King Swein leads a Danish invasion of England". The Literary Encyclopedia. First published 01 January 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=1945, accessed 27 February 2015.]