I know little of him except that he had the rather enviable title of "the most handsome archduke in Austria" and that he was a womaniser and a dandy.
Today one would call him a metrossexual.
He lived an unworried life coming in line to the throne behind his cousin Rudolf, father Karl-Ludwig and brother FF.
He produced the next in line to the throne and paid little attention to his wife (who reciprocated).
When he came closer to the throne after the deaths of Rudolf and his father, did he ever showed any political views, in line either with the Emperor or his more liberal brother ?
Did he have a good relation with Franz Ferdinand ? Despite not having attended the ceremony, did he support his wedding to Sophie Chotek ?