| Answer | Crossword Clue |
|---|---|
| HRE | Charlemagne was its first ruler: Abbr. |
| HRE | Charlemagne was its first ruler (Abbr.) |
| HRE | Francis II was its last ruler: Abbr. |
| EPA | William Ruckelshaus was its first head: Abbr. |
| HRE | Otto I was its first leader: Abbr. |
| ROLLO | Viking who was the first ruler of Normandy |
