Historedia
Person

Lord Castlereagh

Events
3
Episodes
7
Years
1807–1827

Every event in Historedia whose sources name Lord Castlereagh, with the role they cite and all of that event’s episodes. This is not a biography, and mentions are grouped by name, so two people with the same name can share this page.

Events and episodes

  1. Duke of Portland becomes Prime Minister after the 1807 general election

    1807

    Role: Minister

    1. 1807 · House of CommonsApproval of Government Programme

      After the election, the government programme was approved by a vote of 350 to 155 in the House of Commons, demonstrating ministers' substantial gains.

    2. March 1807 · United KingdomFormation of the Second Ministry

      Portland was asked to form a new ministry in March 1807 after the collapse of the Ministry of all the Talents.

  2. Event of 1814: The Anglo-Dutch Treaty of 1814 is signed in London, returning most possessions o

    1814

    Role: British Signatory

    1. 15 June 1814 · LondonTrade and Slavery Provisions

      The treaty included trade rights for Dutch subjects in British-held territories and prohibited slave ships in British ports, reflecting mutual opposition to the slave trade.

    2. 13 August 1814 · LondonSigning of the Treaty

      Lord Castlereagh and Hendrik Fagel signed the treaty in London on 13 August 1814, formalizing the return of most Dutch colonies occupied during the Napoleonic Wars.

    3. 13 August 1814 · LondonReturn of Colonies

      The treaty returned many Dutch colonies to the Netherlands, including Surinam, Curaçao, and the Dutch East Indies, while several others were permanently ceded to Britain.

  3. George Canning appointed British Foreign Secretary

    1822–1827

    Role: Predecessor

    1. 1822-1827 · United KingdomCanning's Succession

      George Canning replaced Castlereagh as Foreign Secretary in 1822, serving under Lord Liverpool until 1827.

    2. 12 August 1822 · dressing roomCastlereagh's Suicide

      Lord Castlereagh died by suicide on 12 August 1822, cutting his throat with a small knife in a dressing room.

Sources

  1. William Cavendish-Bentinck, 3rd Duke of Portland Wikipedia, revision of 2026-08-29
  2. Anglo-Dutch Treaty of 1814 Wikipedia, revision of 2026-08-13
  3. Robert Stewart, Viscount Castlereagh Wikipedia, revision of 2026-09-11