The Tree of EuropeHistorical and genealogical atlas
ESEN
The Tree of Europe · Person

George III of Great Britain

King of Great Britain during the loss of the Thirteen Colonies and the Revolutionary and Napoleonic Wars. His exceptionally long reign coincided with profound changes in the British state and empire.

1738 – 1820King / ElectorHanover · ES
Explore this family · Spanish AtlasBack to people
Portrait of George III of Great Britain
Historical portraitPortrait of George III of Great BritainAllan Ramsay; Commons reproduction · 1765CC BY-SA 4.0 · Source

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: 4 June 1738 Documented

Death: 29 January 1820 Documented

Role: King / Elector

Dynasty: Hanover · ES

Territories: Great Britain (ES) · Scotland (ES) · Ireland (ES) · Hanover (ES)

Recorded governments and reigns
King · Great Britain · Reign Documented1760–1800Effective rule
King · Scotland · Reign Pending review1760–1800Effective rule
King · Ireland · Reign Pending review1760–1800Effective rule
Elector · Hanover · Electorate Pending review1760–1806Effective rule
Family network

Recorded relationships

Parents
Crowns and unions

Their titles over time

Follow the changing territories and offices of George III of Great Britain. Each title retains its own status.

Governments in 1760

  • Great BritainKing
    View titles and jurisdictions
  • ScotlandKing
    View titles and jurisdictions
  • IrelandKing
    View titles and jurisdictions
  • HanoverElector
    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

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

Dates (2/2 with a precise source)
Family and relationships (2/2 with a precise source)
Governments (1/4 with a precise source)
  • GovernmentDocumented

    King · Great Britain · 1760–1800

    Royal title of Great Britain following the union of 1707.
    UK Parliament · Act of Union 1707 · Union of England and Scotland in 1707; Ireland remained a separate kingdom.
    Reviewed on 2026-10-08 by El Árbol de Europa ·
  • GovernmentPending review

    King · Scotland · 1760–1800

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

    King · Ireland · 1760–1800

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

    Elector · Hanover · 1760–1806

    A precise source has not yet been added.
    No individual review recorded ·
Biographical and contextual references (4)
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

More paths from George III of Great Britain