The Tree of Europe · Person

Alexander I of Poland

His union of the Polish and Lithuanian dignities strengthened the dynastic connection between the two states. During his reign, the Polish nobility expanded its role in legislation through Nihil novi.

1461 – 1506KingJagiellon · 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: 5 August 1461 Documented

Death: 19 August 1506 Documented

Role: King

Dynasty: Jagiellon · ES

Territories: Poland (ES) · Lithuania (ES)

Recorded governments and reigns
Grand duke · Lithuania · Grand duchy Documented1492–1506Effective rule
King · Poland · Reign Documented1501–1506Effective rule
Family network

Recorded relationships

Partners
Crowns and unions

Their titles over time

Follow the changing territories and offices of Alexander I of Poland. Each title retains its own status.

Governments in 1501

  • LithuaniaGrand duke
    View titles and jurisdictions
  • PolandKing
    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

7 recorded claims · 0 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (2/2 with a precise source)
Family and relationships (3/3 with a precise source)
Governments (2/2 with a precise source)
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.

Related stories

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Story · Spanish original

The Republic of Nobles

How Poland turned a hereditary monarchy into an elective crown

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