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The Tree of Europe · Person

John of Brienne

A French knight who became king of Jerusalem through his marriage to Maria of Montferrat in 1210. He led the Fifth Crusade at Damietta and subsequently became co-ruler of the Latin Empire of Constantinople.

c. 1170 – 1237King / EmperorBrienne · ES
Explore this family · Spanish AtlasBack to people

This complete profile is available in English. Bibliographic titles retain their original language. Links marked ES open the Spanish edition.

Historical profile

Key details

Birth: 1170 Approximate

Death: 1237 Documented

Role: King / Emperor

Dynasty: Brienne · ES

Territories: Jerusalem (ES) · Latin Empire (ES)

Recorded governments and reigns
King · Jerusalem · Reign Pending review1210–1225Jure uxoris
Emperor · Latin Empire · Empire Pending review1231–1237Co-ruler
Family network

Recorded relationships

Partners
Children
Crowns and unions

Their titles over time

Follow the changing territories and offices of John of Brienne. Each title retains its own status.

Governments in 1210

  • JerusalemKing
    View titles and jurisdictions

Annual dates: overlap within one year does not prove that two offices were held on the same day. Regencies and co-rulerships retain their labels.

Documentation

Sources for this profile

Biographical and contextual references in their original language. Sources and methodology.

Evidence for this profile

6 recorded claims · 5 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (1/2 with a precise source)
Family and relationships (0/2 with a precise source)
  • Marriage or partnershipPending review

    Maria of Montferrat

    A precise source has not yet been added.
    No individual review recorded ·
  • Marriage or partnershipPending review

    Berengaria of León

    A precise source has not yet been added.
    No individual review recorded ·
Governments (0/2 with a precise source)
  • GovernmentPending review

    King · Jerusalem · 1210–1225

    A precise source has not yet been added.
    No individual review recorded ·
  • GovernmentPending review

    Emperor · Latin Empire · 1231–1237

    A precise source has not yet been added.
    No individual review recorded ·
Biographical and contextual references (2)
Editorial history
  • 2026-10-12 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-10-08 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-10-04 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-10-04 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-10-03 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-09-30 · The duchy is limited to Dijon and Autun; each other fief now enters the map only under its dated ruler. John III of Namur and the Nevers/Rethel branch were added. The previous shape combined later counties and unrelated lands as if all belonged to the duchy from 1363.
  • 2026-09-28 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.

Keep exploring

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