CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Heresiarch

Christian theological term for someone who propagates heretical doctrine

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 17, 2026
Entity authorityQ2390438
Source-derived summary

In Christian theology, a heresiarch (also hæresiarch, according to the Oxford English Dictionary; from Greek: αἱρεσιάρχης, hairesiárkhēs via the late Latin haeresiarcha) or arch-heretic is an originator of heretical doctrine or the founder of a sect that sustains such a doctrine.

List of heresiarchs

Nicholas of Antioch, one of the Seven Deacons, founder of Nicolaism, condemned in the Book of Revelation. 1st century

Simon Magus, the purported founder of Gnosticism. 1st century

Montanus, founder of Montanism, mid to late 2nd century

Theodotus of Byzantium, propounder of Adoptionism, late 2nd century

Valentinus, founder of Valentinianism, 2nd century

Sabellius, founder of Sabellianism, 3rd century

Marcion, founder of Marcionism, 2nd century

Basilides, founder of Basilidianism, 2nd century

Novatian, founder of Novatianism, condemned by Pope Cornelius. 3rd century

Arius, founder of Arianism, condemned by the 1st council of Nicaea. 3rd and 4th centuries

Donatus Magnus, founder of Donatism, condemned by Augustine of Hippo. 4th century

Apollinaris of Laodicea, founder of Apollinarianism, condemned at the 1st Council of Constantinople. 4th century,

John Philoponus (6th century), founder of tritheism, condemned at the 3rd Council of Constantinople

Macedonius I of Constantinople, founder of Macedonianism, condemned at the 1st Council of Constantinople. 4th century

Aëtius & Eunomius, leaders of Anomoeanism, condemned at the 1st Council of Constantinople. 4th century

Bonosus of Serdica, propounder of Antidicomerianism, condemned by Augustine of Hippo.

Editorial summary

The public source identifies “Heresiarch” as christian theological term for someone who propagates heretical doctrine. This brief keeps that definition visible, then builds a research path around Heresiarch, Christian and theological.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current 222-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with Heresiarch, Christian and theological providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Heresiarch”, the useful work is to connect “christian theological term for someone who propagates heretical doctrine” to the records capable of establishing context and consequence.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 17, 2026. The linked authority identifier is Q2390438. None of the 0 selected statements returned an explicit reference.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Heresiarch”, its source revision and the description used here.
  2. Expand the search: follow Heresiarch primary sources, Heresiarch archive and Heresiarch research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Heresiarch”?
  2. What terminology or title could unlock a more precise catalogue search?
  3. Which institution is responsible for the underlying evidence?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from Heresiarch” 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.