Possible Questions:
- Charlemagne's dom.
- Title for Charlemagne (abbr.)
- Part of H.R.E.
- Ruler: Abbr.
- Part of HRE
- H.R.E. ruler
- Ruler of anc. Rome
- Ottoman, e.g.: Abbr.
- Napoleon, for one: Abbr.
- Hirohito's title: Abbr.
- Titus, e.g.: Abbr.
- Supreme ruler: Abbr.
- Otho's dom.
- Old Mex. ruler
- Nero's title, briefly
- Nero, e.g.: Abbr.
- Napoleon or Nero: Abbr.
- HRE part: Abbr.
- Charlemagne, e.g.: Abbr.
- Akihito, e.g.: Abbr.
- Titus or Tiberius: Abbr.
- The "E" in H.R.E.: Abbr.
- Sovereign ruler: Abbr.
- Royal one: Abbr.
- Realm of Cath. II
- Queen Victoria's realm, e.g.: Abbr.
- Pt. of H.R.E.
- Old Roman ldr.
- Nero's title: Abbr.
- Nero or Napoleon: Abbr.
- Napoleon, for short
- Napoleon, for one.: Abbr.
- Napoleon, for one (abbr.)
- Napoleon, e.g.: Abbr.
- Napoleon title.: Abbr.
- Napoleon or Jones: Abbr.
- Montezuma's title: Abbr.
- Little Caesar?
- Like a little Caesar?
- King's equiv.
- Japanese royal, for short
- Japanese monarch (abbr.)
- Japanese leader: Abbr.
- Japanese ldr.
- Japan's Akihito's, e.g.: Abbr.
- Incas' realm, e.g.: Abbr.
- HRE pt.
- Holy Roman, e.g.: Abbr.
- Hirohito, e.g.: abbr.
- Haile Selassie, e.g.: Abbr.
- Haile Selassie shortly
- H.R.E., for example
- H.R.E. part: Abbr.
- H.R.E. part
- Great Brit., once
- Great Brit., e.g., in years past
- Forbidden City occupant: Abbr.
- Domain: Abbr.
- Diocletian, e.g.: Abbr.
- Charlemagne, for ex.
- Caesar, e.g.: Abbr.
- Brit. or Byzantine
- Akihito's title: Abbr.
- Absolute ruler: Abbr.