Maximilian I became Holy Roman Emperor in succession to his father
Ferdinand III. After his marriage to Mary of Burgundy, he had
fought against rival French claims to secure the Burgundian lands
for the Hapsburg family, and had ruled jointly with his father for
the last ten years.
Citation:
Editors. "Maximilian I becomes Holy Roman Emperor on death of Ferdinand III".
The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=13919, accessed 24 May 2013.]