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Joachim Frederick, Elector of Brandenburg

Elector of Brandenburg
The basics
Occupation Bishop
Country Germany Poland
Date of birth Cölln
Date of death Jul 28, 1608 Köpenick
Mother: Sophie of Legnica
Brother(s): Joachim Ernst Margrave of Brandenburg-Ansbach George Albert II Margrave of Brandenburg Christian Margrave of Brandenburg-Bayreuth Frederick IX Margrave of Brandenburg Jan George van Brandenburg
Children: John Sigismund Elector of Brandenburg Anne Catherine of Brandenburg Barbara Sophie of Brandenburg Christian William of Brandenburg John George Duke of Jägerndorf August van Brandenburg Albrecht Frederik van Brandenburg Joachim van Brandenburg Ernst Marie Eleonore von Brandenburg
Sister(s): Magdalene of Brandenburg Agnes of Brandenburg Duchess of Pomerania Elisabeth Sophia of Brandenburg Sophie of Brandenburg Erdmuthe of Brandenburg Dorothea Sibylle of Brandenburg Anna Maria of Brandenburg
Spouse: Catherine of Brandenburg-Küstrin Eleanor of Prussia
Father: John George Elector of Brandenburg
Authority Library of congress id ISNI id VIAF id
The details

Joachim Frederick (German: Joachim Friedrich) (27 January 1546 – 18 July 1608), of the House of Hohenzollern, was Prince-elector of the Margraviate of Brandenburg from 1598 until his death.


Joachim Frederick was born in Cölln to John George, Elector of Brandenburg, and Sophie of Legnica. He served as administrator of the Archbishopric of Magdeburg from 1566 to 1598, then succeeded his father as Elector of Brandenburg in 1598. Joachim Frederick was succeeded at his death by his son John Sigismund. Joachim Frederick's first marriage on 7 March 1570 was to Catherine of Brandenburg-Küstrin, daughter of John, Margrave of Brandenburg-Küstrin, and Catherine of Brunswick-Wolfenbüttel. Joachim Frederick's second marriage, on 23 October 1603, was to Eleanor of Prussia, born 12 August 1583, daughter of Albert Frederick and Marie Eleonore of Cleves. He became regent of the Duchy of Prussia in 1605. His titles also included "duke (Dux) of Stettin, Pomerania, Cassubia, Vandalorum and Crossen", according to the terms of the Treaty of Grimnitz, although the Pomeranian titles were only nominal.

Joachim Frederick and Catherine of Brandenburg-Küstrin had these children:

  • John Sigismund, Elector of Brandenburg (8 November 1572 – 23 December 1619)
  • Anne Catherine (26 June 1575 – 29 March 1612), married King Christian IV of Denmark
  • Girl [1576]
  • John George, Duke of Jägerndorf (16 December 1577 – 2 March 1624) married Eva Christina of Württemberg (1590 - 1657), daughter of Frederick I, Duke of Württemberg and Sibylla of Anhalt. Elected Bishop of Strasbourg 1592; resigned 1604. Herrenmeister (Grand Master) of the Order of Saint John from 1616 until his death.
  • August Frederick (16 February 1580 – 23 April 1601)
  • Albert Frederick (29 April 1582 – 3 December 1600)
  • Joachim (13 April 1583 – 10 June 1600)
  • Ernest (13 April 1583 – 18 September 1613)
  • Barbara Sophie (16 November 1584 – 13 February 1636), married John Frederick, Duke of Württemberg
  • Girl [1585/6]
  • Christian William (28 August 1587 – 1 January 1665)

Joachim Frederick and Eleanor of Prussia had only one child:

  • Marie Eleonore (22 March 1607 – 18 February 1675), married Louis Philip, Count Palatine of Simmern-Kaiserslautern


Joachim Frederick, Elector of Brandenburg
House of Hohenzollern
Born: 27 January 1546 Died: 18 July 1608
Regnal titles
Preceded by
John George
Elector of Brandenburg
Succeeded by
John Sigismund
Preceded by
Sigismund of Brandenburg
Administrator of Magdeburg
Succeeded by
Christian William of Brandenburg
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