Regnal name
name chosen by a reigning monarch, different from their original secular name

A regnal name, regnant name, or reign name is the name used by monarchs and popes during their reigns and subsequently, historically. Since ancient times, some monarchs have chosen to use a different name from their original name when they accede to the monarchy.
The regnal name is usually followed by a regnal number, written as a Roman numeral, to differentiate that monarch from others who have used the same name while ruling the same realm. In some cases, the monarch has more than one regnal name, but the regnal number is based on only one of those names, for example Charles X Gustav of Sweden. If a monarch reigns in more than one realm, they may carry different ordinals in each one, as some realms may have had different numbers of rulers of the same regnal name. For example, the same person was both King James VI of Scotland and King James I of England.
The ordinal is not normally used for the first ruler of the name, but is used in historical references once the name is used again. Thus, Queen Elizabeth I of England was called simply "Elizabeth of England" until the accession of Queen Elizabeth II almost four centuries later in 1952; subsequent historical references to the earlier queen retroactively refer to her as Elizabeth I. However, Tsar Paul I of Russia, King Umberto I of Italy, Emperor Franz Joseph I of Austria, King Juan Carlos I of Spain and Emperor Haile Selassie I of Ethiopia and Louis Phillipe I of France all used the ordinal I (first) during their reigns, even if there was – at least so far in the case of Paul of Russia, Franz Joseph of Austria, Juan Carlos of Spain or Haile Selassie of Ethiopia, and Louis Philippe of France – never a second ruler with the same name. In spoken English, such names are pronounced as "Elizabeth the First", "George the Sixth", etc.
In some countries in Asia, monarchs took or take era names.
The public source identifies “Regnal name” as name chosen by a reigning monarch, different from their original secular name. This brief keeps that definition visible, then builds a research path around Regnal, name and chosen.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Regnal name”, the useful work is to connect “name chosen by a reigning monarch, different from their original secular name” to the records capable of establishing context and consequence.
Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Sep 1, 2026. The linked authority identifier is Q1200976. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1952.
Public reputation and documentary evidence do not always develop together; absence from a summary is not evidence of historical absence. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.
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Three-step research path
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Questions for further research
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This entry incorporates text from “Regnal name” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.