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August Aleksander Czartoryski

Voivode of Ruthenia and a leading figure in the Familia. His marriage to Maria Zofia Sieniawska expanded the Czartoryskis’ landed and political resources.

1697 – 1782Prince / VoivodeCzartoryski
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Biography

Life of August Aleksander Czartoryski

Career and marriage

Kazimierz Czartoryski’s son served abroad before establishing himself in Commonwealth politics. In 1731 he married the Sieniawski heiress.

References: Polski Słownik Biograficzny · August Aleksander Czartoryski

The Familia

With Michał Fryderyk he advanced his house’s position. His nephew Stanislaus Augustus’s election in 1764 placed the family network at the centre of disputes over reform and foreign power.

References: Polski Słownik Biograficzny · August Aleksander Czartoryski

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: 1697 Documented

Death: 1782 Documented

Role: Prince / Voivode

Other recorded names: August Aleksander Czartoryski · Aleksander August Czartoryski · Augusto Alejandro Czartoryski

Dynasty: Czartoryski

Territories: Poland (ES) · Lithuania (ES)

Family network

Recorded relationships

Parents
Documentation

Sources for this profile

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

Evidence for this profile

3 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 (1/1 with a precise source)
Biographical and contextual references (1)
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.

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