The Tree of Europe · Person

Albert I of Bavaria-Straubing

Duke of Bavaria-Straubing and, through his mother Margaret, ruler of Hainaut, Holland and Zeeland. He acted as regent for his brother William I and became count on William’s death in 1389.

1336 – 1404DukeWittelsbach · ES

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: 1336 Pending review

Death: 1404 Pending review

Role: Duke

Dynasty: Wittelsbach · ES

Territories: Bavaria (ES) · Holland (ES) · Hainaut (ES) · Zeeland (ES)

Recorded governments and reigns
Duke · Bavaria · Duchy Pending review1347–1404Branch rule
Regent · Holland · Regency Pending review1358–1389RegencyGovernment in William’s place while William retained the title.
Count · Holland · County Pending review1389–1404Effective rule
Regent · Hainaut · Regency Pending review1358–1389RegencyGovernment in William’s place while William retained the title.
Count · Hainaut · County Pending review1389–1404Effective rule
Regent · Zeeland · Regency Pending review1358–1389RegencyGovernment in William’s place while William retained the title.
Count · Zeeland · County Pending review1389–1404Effective rule
Family network

Recorded relationships

Parents
Partners
Crowns and unions

Their titles over time

Follow the changing territories and offices of Albert I of Bavaria-Straubing. Each title retains its own status.

Governments in 1389

  • BavariaDuke
    View titles and jurisdictions
    • Bavaria · ESDuke · Branch rule · Albert I of Bavaria-Straubing1347–1404
  • HollandRegent
    View titles and jurisdictions
    • Holland · ESRegent · Regency1358–1389 · Government in William’s place while William retained the title.
  • HollandCount
    View titles and jurisdictions
  • HainautRegent
    View titles and jurisdictions
    • Hainaut · ESRegent · Regency1358–1389 · Government in William’s place while William retained the title.
  • HainautCount
    View titles and jurisdictions
  • ZeelandRegent
    View titles and jurisdictions
    • Zeeland · ESRegent · Regency1358–1389 · Government in William’s place while William retained the title.
  • ZeelandCount
    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.

How these titles came together
  1. 1358 · HainautRegency

    William’s incapacity led his brother Albert to exercise the regency. William retained the title until 1389; exercising effective government preceded inheritance of the county.

Selected explained accessions. Other titles remain in the profile’s list of recorded governments.

Evidence for this profile

13 recorded claims · 13 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (0/2 with a precise source)
  • BirthPending review

    1336

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

    1404

    A precise source has not yet been added.
    No individual review recorded ·
Family and relationships (0/3 with a precise source)
  • FatherPending review

    Louis IV of Bavaria

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

    Margaret II of Hainaut

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

    Margaret of Brieg

    A precise source has not yet been added.
    No individual review recorded ·
Governments (0/7 with a precise source)
  • GovernmentPending review

    Duke · Bavaria · 1347–1404

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

    Regent · Holland · 1358–1389

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

    Count · Holland · 1389–1404

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

    Regent · Hainaut · 1358–1389

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

    Count · Hainaut · 1389–1404

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

    Regent · Zeeland · 1358–1389

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

    Count · Zeeland · 1389–1404

    A precise source has not yet been added.
    No individual review recorded ·
Successions (0/1 with a precise source)
  • SuccessionPending review

    Hainaut · William I of Bavaria-Straubing → Albert I of Bavaria-Straubing · 1358

    William’s incapacity led his brother Albert to exercise the regency. William retained the title until 1389; exercising effective government preceded inheritance of the county.A precise source has not yet been added.
    No individual review recorded ·
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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