Rarest Holy Roman Emperor — All 40 Answers Ranked by Rarity

40 answers are accepted for “Name a Holy Roman Emperor”. Lambert of Italy is the rarest Holy Roman Emperor in this ranking, with 8,358 monthly Wikipedia views (rarity 1.000, Legendary). Joseph II is the second-rarest with 19,550 monthly Wikipedia views, 2.34× the figure for Lambert of Italy. Charlemagne is the most common Holy Roman Emperor in this ranking, with 1,702,306 monthly Wikipedia views, 203.7× the figure for the rarest. Combined monthly Wikipedia views across the 40 answers: 9,355,795. Lambert of Italy is under 0.1% of that total. 8 answers are Epic or Legendary: Lambert of Italy (Legendary), Joseph II (Legendary), Louis the Blind (Legendary), and 5 more.

Quick answer

Monthly English Wikipedia pageviews. Source: Wikidata + Wikipedia pageviews (2026-10).

Ranked answers

40 answers to “Name a Holy Roman Emperor”, rarest first. A rarity of 1 is the rarest answer in this prompt.
Rank	Answer	Tier	Rarity	Monthly Wikipedia views
1	Lambert of Italy on Wikipedia	Legendary	1.000	8,358
2	Joseph II on Wikipedia	Legendary	0.974	19,550
3	Louis the Blind on Wikipedia	Legendary	0.949	34,394
4	Lothair III, Holy Roman Emperor on Wikipedia	Epic	0.923	34,527
5	Guy III of Spoleto on Wikipedia	Epic	0.897	36,924
6	Berengar I of Italy on Wikipedia	Epic	0.872	47,767
7	Otto IV, Holy Roman Emperor on Wikipedia	Epic	0.846	50,174
8	Otto II, Holy Roman Emperor on Wikipedia	Epic	0.821	60,060
9	Otto III, Holy Roman Emperor on Wikipedia	Rare	0.795	69,942
10	Conrad II, Holy Roman Emperor on Wikipedia	Rare	0.769	73,770
11	Henry III, Holy Roman Emperor on Wikipedia	Rare	0.744	76,667
12	Henry VII, Holy Roman Emperor on Wikipedia	Rare	0.718	80,076
13	Henry V, Holy Roman Emperor on Wikipedia	Rare	0.692	83,279
14	Louis IV, Holy Roman Emperor on Wikipedia	Rare	0.667	90,162
15	Henry II, Holy Roman Emperor on Wikipedia	Rare	0.641	92,432
16	Matthias, Holy Roman Emperor on Wikipedia	Rare	0.615	107,314
17	Henry VI, Holy Roman Emperor on Wikipedia	Uncommon	0.590	126,839
18	Charles VII, Holy Roman Emperor on Wikipedia	Uncommon	0.564	130,430
19	Joseph I, Holy Roman Emperor on Wikipedia	Uncommon	0.538	131,941
20	Ferdinand III, Holy Roman Emperor on Wikipedia	Uncommon	0.513	152,564
21	Maximilian II, Holy Roman Emperor on Wikipedia	Uncommon	0.487	153,500
22	Rudolf II, Holy Roman Emperor on Wikipedia	Uncommon	0.462	169,112
23	Ferdinand II, Holy Roman Emperor on Wikipedia	Uncommon	0.436	169,988
24	Otto the Great on Wikipedia	Uncommon	0.410	185,808
25	Henry IV, Holy Roman Emperor on Wikipedia	Familiar	0.385	189,326
26	Frederick III, Holy Roman Emperor on Wikipedia	Familiar	0.359	224,046
27	Charles the Bald on Wikipedia	Familiar	0.333	225,452
28	Charles IV, Holy Roman Emperor on Wikipedia	Familiar	0.308	268,859
29	Ferdinand I, Holy Roman Emperor on Wikipedia	Familiar	0.282	281,439
30	Charles VI, Holy Roman Emperor on Wikipedia	Familiar	0.256	285,884
31	Leopold I, Holy Roman Emperor on Wikipedia	Familiar	0.231	291,750
32	Francis I, Holy Roman Emperor on Wikipedia	Familiar	0.205	299,816
33	Leopold II, Holy Roman Emperor on Wikipedia	Common	0.179	300,740
34	Maximilian I, Holy Roman Emperor on Wikipedia	Common	0.154	349,523
35	Frederick II, Holy Roman Emperor on Wikipedia	Common	0.128	352,465
36	Frederick Barbarossa on Wikipedia	Common	0.103	368,033
37	Sigismund, Holy Roman Emperor on Wikipedia	Common	0.077	439,292
38	Francis II, Holy Roman Emperor on Wikipedia	Common	0.051	551,501
39	Charles V, Holy Roman Emperor on Wikipedia	Common	0.026	1,039,785
40	Charlemagne on Wikipedia	Common	0.000	1,702,306

FAQ

What is the rarest Holy Roman Emperor?

Lambert of Italy is the rarest Holy Roman Emperor in this ranking, with 8,358 monthly Wikipedia views (rarity 1.000, Legendary).

How many Holy Roman Emperors are there?

There are 40 Holy Roman Emperors in this ranking, from Lambert of Italy (rarest) to Charlemagne (most common).

What is the most common Holy Roman Emperor?

Charlemagne is the most common Holy Roman Emperor in this ranking, with 1,702,306 monthly Wikipedia views (Common).

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Sources

Recorded source: Wikidata + Wikipedia pageviews (2026-10). The answer list is compiled from Wikidata (CC0), and the view counts are monthly English Wikipedia pageviews. Rarity is the percentile of the popularity figure inside this prompt: 1 is the rarest and 0 is the most common. Linked names open the English Wikipedia article stored on that answer.