Editors. "Charles V resigns the Holy Roman Empire to his brother". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14934, accessed 21 May 2013.]
Charles V, wearied from juggling responsibility for his many dominions for over thirty-five years, resigns the Holy Roman Empire to his brother, Ferdinand I, who rules until his death in 1564.