The Tree of Europe · Person

William IV of Jülich-Berg

Duke of Jülich, 1475–1511, of the House of Jülich.

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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: 1455 Pending review

Death: 1511 Pending review

Role: Duke

Dynasty: Jülich · ES

Territories: Jülich (ES) · Berg (ES) · Ravensberg (ES)

Recorded governments and reigns

Duke · Jülich · Duchy Inferred1475–1511Effective rule

Duke · Berg · Duchy Inferred1475–1511Effective rule

Count · Ravensberg · County Inferred1475–1511Effective rule

Family network

Recorded relationships

Partners

Sibylla of Brandenburg · ESPending review

Children

Maria of Jülich-Berg · ES

Crowns and unions

Their titles over time

Follow the changing territories and offices of William IV of Jülich-Berg. Each title retains its own status.

Period

Governments in 1475

JülichDuke
View titles and jurisdictions
- Jülich · ESDuke · Effective rule1475–1511
BergDuke
View titles and jurisdictions
- Berg · ESDuke · Effective rule1475–1511
RavensbergCount
View titles and jurisdictions
- Ravensberg · ESCount · Effective rule1475–1511

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.

Evidence for this profile

6 recorded claims · 3 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (0/2 with a precise source)

BirthPending review
1455
A precise source has not yet been added.
No individual review recorded ·
DeathPending review
1511
A precise source has not yet been added.
No individual review recorded ·

Family and relationships (0/1 with a precise source)

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

Governments (3/3 with a precise source)

GovernmentInferred
Duke · Jülich · 1475–1511
The duchies and counties retained separate institutions. Possession in 1614 was provisional and the definitive partition followed in 1666; Mark and Ravensberg have no separate geometry.
LVR · Herzogtum Kleve · Union of 1511/1521 and partition of 1614/1666.LVR · Erbfolgestreit 1609–1794 · Treaty of Xanten, 1614.
Reviewed on 2026-10-04 by El Árbol de Europa ·
GovernmentInferred
Duke · Berg · 1475–1511
The duchies and counties retained separate institutions. Possession in 1614 was provisional and the definitive partition followed in 1666; Mark and Ravensberg have no separate geometry.
LVR · Herzogtum Kleve · Union of 1511/1521 and partition of 1614/1666.LVR · Erbfolgestreit 1609–1794 · Treaty of Xanten, 1614.
Reviewed on 2026-10-04 by El Árbol de Europa ·
GovernmentInferred
Count · Ravensberg · 1475–1511
The duchies and counties retained separate institutions. Possession in 1614 was provisional and the definitive partition followed in 1666; Mark and Ravensberg have no separate geometry.
LVR · Herzogtum Kleve · Union of 1511/1521 and partition of 1614/1666.LVR · Erbfolgestreit 1609–1794 · Treaty of Xanten, 1614.
Reviewed on 2026-10-04 by El Árbol de Europa ·

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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