Well, the more popular a name the likelier it is that some screwed up person has that name.

• Stalin was a Joseph (Ioseb).
• Leopold II of Belgium was a Leopold (Léopold), with second names Lewis (Louis) and Philipp (Philippe).
• Lenin was a Vladimir (Владимир).
• Obote was a Milton.
• Mussolini was a Benedict (Benito).
• Franco was a Francis (Francisco).
• Tito was a Joseph (Josip).
• Micombero was a Michael (Michel).