Sigismund III Vasa
King of Poland and, for a time, also of Sweden. His dual Vasa and Jagiellon inheritance fuelled long Baltic wars and dynastic conflicts between the two crowns.
This complete profile is available in English. Bibliographic titles retain their original language. Links marked ES open the Spanish edition.
Key details
Birth: 20 June 1566 Documented
Death: 30 April 1632 Documented
Role: King
Dynasty: Vasa
Territories: Poland (ES) · Lithuania (ES) · Sweden (ES)
Recorded relationships
Their titles over time
Follow the changing territories and offices of Sigismund III Vasa. Each title retains its own status.
Governments in 1592
- Polish–Lithuanian Commonwealth2 titles and offices
View titles and jurisdictions
- Poland · ESKing · Effective rule1587–1632
- Lithuania · ESGrand duke · Effective rule1587–1632
The Union of Lublin of 1569 created a commonwealth with a shared monarch and parliament. The Crown and Grand Duchy retained their titles and institutions; Courland and Ducal Prussia thereby did not become provinces of the Crown. Source for this grouping
- SwedenKing
View titles and jurisdictions
- Sweden · ESKing · Effective rule1592–1599
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
- 1587 · PolandElection
He was elected in a disputed succession. His Jagiellon descent through Catherine favoured his candidacy, but did not make the elective crown an automatic inheritance.
- 1587 · LithuaniaElection
His election within the Polish–Lithuanian monarchy also brought the title of grand duke. Poland and Lithuania retained their own institutions within the Union of Lublin.
- 1592 · SwedenInheritance
He succeeded his father John III while already elected King of Poland. Conflict with his uncle Charles and Swedish opposition ended in his deposition in 1599.
Selected explained accessions. Other titles remain in the profile’s list of recorded governments.
Sources for this profile
- Svenskt biografiskt lexikon · Sigismund
- Palacios Reales de Suecia · King Sigismund
- Museo de Historia de Polonia · Bitwa pod Byczyną
- Walka Zygmunta III Wazy o szwedzki tron · Plataforma educativa polaca
- Robert Frost · The Northern Wars, 1558–1721
- Deutsche Nationalbibliothek · GND authority record · Zygmunt III., Polen, König
- Encyclopaedia Britannica
Biographical and contextual references in their original language. Sources and methodology.
Evidence for this profile
12 recorded claims · 6 without a claim-specific source. Context references do not by themselves verify every fact.
Dates (2/2 with a precise source)
- BirthDocumented
20 June 1566
The authority record gives the birth as 1566-06-20. - DeathDocumented
30 April 1632
The authority record gives the death as 1632-04-30.
Family and relationships (4/4 with a precise source)
- FatherDocumented
John III of Sweden
The authority record identifies John III of Sweden (GND 122841999) as father. - MotherDocumented
Catherine Jagiellon
The authority record identifies Catherine Jagiellon (GND 135566967) as mother. - Marriage or partnershipDocumented
Anna of Austria
The authority record identifies Anna of Austria (GND 115772561) as spouse. - Marriage or partnershipDocumented
Constance of Austria
The authority record identifies Constance of Austria (GND 122911466) as spouse.
Governments (0/3 with a precise source)
- GovernmentPending review
King · Poland · 1587–1632
A precise source has not yet been added. - GovernmentPending review
Grand duke · Lithuania · 1587–1632
A precise source has not yet been added. - GovernmentPending review
King · Sweden · 1592–1599
A precise source has not yet been added.
Successions (0/3 with a precise source)
- SuccessionPending review
Sweden · Unrecorded successor · 1592
He succeeded his father John III while already elected King of Poland. Conflict with his uncle Charles and Swedish opposition ended in his deposition in 1599.A precise source has not yet been added. - SuccessionPending review
Poland · Unrecorded successor · 1587
He was elected in a disputed succession. His Jagiellon descent through Catherine favoured his candidacy, but did not make the elective crown an automatic inheritance.A precise source has not yet been added. - SuccessionPending review
Lithuania · Unrecorded successor · 1587
His election within the Polish–Lithuanian monarchy also brought the title of grand duke. Poland and Lithuania retained their own institutions within the Union of Lublin.A precise source has not yet been added.
Biographical and contextual references (7)
- Svenskt biografiskt lexikon · Sigismund
- Palacios Reales de Suecia · King Sigismund
- Museo de Historia de Polonia · Bitwa pod Byczyną
- Walka Zygmunta III Wazy o szwedzki tron · Plataforma educativa polaca
- Robert Frost · The Northern Wars, 1558–1721
- Deutsche Nationalbibliothek · GND authority record · Zygmunt III., Polen, König
- Encyclopaedia Britannica
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.
