George Canning succeeds Lord Castlereagh as Foreign Secretary and
as leader of the House of Commons.
Citation:
Editors. "George Canning succeeds Castlereagh as Foreign Secretary".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17827, accessed 22 May 2013.]