List Of Pope Names

Working With a Complete List Of Pope Names

A List Of Pope Names is exactly what it sounds like — a chronological record of every baptismal and regnal name chosen by the bishops of Rome from Peter through Francis. If you are building a database, writing a paper, or just curious about why so many popes picked the same name, the raw data is straightforward. The trick is knowing where to find clean versions and what traps to avoid when you start using it. The most reliable starting point is the Vatican's own Annuario Pontificio, published annually. It contains a table of all pontiffs with their regnal numbers, Latin signatures, and dates. For a running English-language version, Catholic-Hierarchy.org maintains a continuously updated roster with birth names alongside regnal choices. Wikidata also has a structured dump you can query if you want to pull things like name frequency distributions automatically. I once spent three days reconciling conflicting lists because one source numbered popes differently than another. The problem came from the antipopes and the lost numerals — John XXIII before 1958 actually meant another person entirely, and Benedict XIII versus Benedict XIV trips people up repeatedly. My workaround was to anchor everything to the Annuario Pontificio's numbering and then flag every discrepancy in a separate column rather than trying to merge two incompatible systems. Once I stopped treating different sources as interchangeable, the reconciliation took about twenty minutes instead of three days.

What most people miss about papal naming

The first thing beginners get wrong is assuming regnal numbers are automatic. They are not. A pope chooses his name. If there were already six Benedict's before him, the next one does not automatically become Benedict VII — he has to decide whether to continue the line or pick something else. The numbering system was standardized much later than most people assume, and even then there are gaps and disputes. Another thing nobody warns you about: popes do not always keep their baptismal name when they take office, but they also do not always pick from a finite set. Some choose purely commemorative names with no predecessor bearing that numeral. Adrian VI, for example, was the last non-Italian pope until John Paul II, and he kept his baptismal name Adriaan Florisz while Latinizing it. Gregory XV chose a name that honored his predecessor Gregory XVI, which sounds logical until you realize Gregory XVI himself was a unusual choice for a nineteenth-century Italian reformer. The names carry political weight. That is the part most casual lists omit entirely.

Frequency is more predictable than you might expect

Out of roughly two hundred and sixty-five recognized popes, the most common regnal names break down like this: John appears about thirty times, including the antipope count, followed closely by Benedict and Clement at roughly twenty each. Pius and Alexander sit just below them. When you filter out antipopes and account for the lost numeral gap between Stephen II and Stephen VIII, the distribution tightens even further. If you are working with a custom list and need to generate a frequency table, do it directly from the Annuario numbering rather than pulling from secondary articles that have already made interpretive choices. I ran a quick script on a CSV I exported from Catholic-Hierarchy.org against the Annuario's tables and found about fourteen discrepancies in numbering alone — mostly around the third-century popes where the records are fragmentary. Correcting those took me less than an hour, but only because I knew which source to treat as authoritative.

Building your own dataset

Here is the practical part. Start with a clean export. Catholic-Hierarchy.org lets you download a full list of popes with columns for regnal name, baptismal name, dates of reign, place of birth, and cause of death. Wikidata offers SPARQL endpoints if you prefer querying over scraping. Both are fine, but they differ in how they handle disputed entries. My own process has settled into something like this:

• Export the full Catholic-Hierarchy.org CSV.
• Load it into a spreadsheet or a small Python dataframe.
• Compare the regnal numbering against the Annuario Pontificio's published table for any gaps or duplicates.
• Flag entries marked as antipope or disputed separately so they do not inflate your counts accidentally.
• Add columns for name origin and any noted rationale if your source includes it; most do not, so you will need to fill those in manually from secondary biographies.

This usually takes me under forty-five minutes for a baseline clean dataset. If you need scholarly-grade verification on the early medieval entries, budget an additional two to three hours per pope from the seventh century and earlier. The records are thin and the chronologies vary by manuscript. The biggest source of error is numeral collision. John Paul I and John Paul II both exist, and there is no John Paul III because the line stopped with the second one. That means any script that auto-generates numerals will break if you ask it to assign a third. Always treat numerals as labels, not mathematical sequences. Another issue: some lists conflate the baptismal name with the regnal name. Francis is both his birth name and his regnal name, which is rare but not unique — Urban VII and Marcellus II also kept their birth names. A naive deduplication algorithm will erase these entries or merge them incorrectly if it assumes the two fields always differ.

When to use an existing list versus building one

If you need quick reference data for casual research, a published list from Catholic-Hierarchy.org or the Vatican's own site is sufficient. If you are doing quantitative analysis — name frequency over centuries, correlations between elections and the names chosen, demographic breakdowns by region — build your own. The ready-made lists are curated for readability, not for analysis, and that curation introduces subtle biases that compound when you run statistics on them. The downside of building your own list is the initial time investment and the ongoing maintenance required when new research revises early papal chronologies. The upside is that you control the schema, you can add columns for whatever you need, and you are not locked into someone else's interpretation of disputed entries. I have found that even a minimal cleaned dataset pays for itself within a week of regular use.

A note on the antipope question

Any honest list has to address antipopes, and the answer depends entirely on what you need the list for. Catholic ecclesiastical tradition recognizes about seventeen antipopes across various periods. Secular historians often include them in timeline exercises. If you are counting regnal numerals for a trivia application, include them with a clear flag. If you are studying the official succession, exclude them but keep a separate appendix so you do not lose the data. I learned this the hard way when a client asked for "all popes named John" and I returned a list that silently excluded the antipopes. They wanted the antipopes included for their research and had no idea my definition of pope was narrower than theirs. The fix was simple — add a boolean column for recognized versus antipope and let the consumer decide how to filter. That single column eliminated about eighty percent of follow-up questions I used to get on these projects.

Where to get a ready-made file

For a complete List Of Pope Names in a single download, Catholic-Hierarchy.org's CSV export remains the most practical option. It covers all recognized popes with dates, names, and biographical notes in a format that opens in any spreadsheet program. If you need the Latin signatures and Vatican-internal numbering, the Annuario Pontificio's downloadable appendices are the next step. Wikidata's structured data export is worth pulling if you already work with RDF or JSON-LD pipelines. The raw data behind all of these is stable. The interpretations shift slowly. Keep your sources versioned and note the date you pulled the list, because the early medieval entries get revised occasionally and you do not want to surprise yourself six months later when the chronology changes.