Yes
Napoleon
The Duke of Wellington.
The Duke of Wellington with plenty of Prussian help.
The French Emperor, Napoleon Bonaparte I.
They fought the Battle of Waterloo om 18 June 1815.
Arthur Wellesley, 1st Duke of Wellington"Duke of Wellington" and "The Iron Duke". .
Napoleon Bonaparte suffered defeat at the hands of the Duke of Wellington and the British army
Arthur Wellesley was the Duke of Wellington around Napoleon's time.
Duke of Wellington - title - was created in 1814.
Duke of Wellington's Regiment was created in 1702.
No Duke of Wellington has been royalty. You mean either peers or nobility. I've most often seen the following form: Wellington, Arthur Wellesley, 1st Duke of Which, by the way, is how Wikipedia sorts the Iron Duke.