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Catherine of Brandenburg-Küstrin
Born	(1549-08-10)10 August 1549 Küstrin,Margraviate of Brandenburg-Küstrin,Holy Roman Empire
Died	30 September 1602(1602-09-30) (aged 53) Cölln,Berlin.Margraviate of Brandenburg, Holy Roman Empire
Spouse	Joachim Frederick, Elector of Brandenburg ​ ​ (m. 1570)​
Issue	John Sigismund, Elector of Brandenburg Anne Catherine, Queen of Denmark and Norway Johann Georg of Brandenburg August of Brandenburg Albert Frederick of Brandenburg Joachim of Brandenburg Ernest of Brandenburg Barbara Sophie, Duchess of Württemberg Christian William of Brandenburg
House	Hohenzollern
Father	John, Margrave of Brandenburg-Küstrin
Mother	Catherine of Brunswick-Wolfenbüttel, Margravine of Brandenburg-Küstrin
Religion	Lutheran

Catherine of Brandenburg-Küstrin (German:Katharina von Brandenburg-Küstrin) (10 August 1549 – 30 September 1602) was a Margravine ofBrandenburg-Küstrin by birth andElectress of Brandenburg by marriage.

Catherine was the younger of two daughters ofJohn, Margrave of Brandenburg-Küstrin (1513–1571) from his marriage toCatherine (1518–1574), daughter ofHenry II, Duke of Brunswick-Wolfenbüttel.

On 8 January 1570, she married Joachim of Brandenburg, later ElectorJoachim III Frederick of Brandenburg (1546–1608) inKüstrin. Due to the marriage, her husband no longer had a legitimate claim on the position of bishop of the Catholic Archdiocese ofMagdeburg^[1] and PopePius V put in a request to EmperorMaximilian for his dismissal.^[2]

Catherine tried to improve the fate of the poor and the needy. She built adairy inWedding and sold its produce on the Molkenmarkt ("Milk Market"), a square inBerlin. She used the proceeds to finance a pharmacy in theStadtschloss that provided medicine free of charge to those in need.^[3]

Catherine died on 30 September 1602. On 13 October, she was buried in the Hohenzollern crypt (now part of theBerliner Dom).

From her marriage with Joachim Frederick, Catherine had the following children:

• John Sigismund, Elector of Brandenburg (8 November 1572 – 23 December 1619), Elector of Brandenburg

married in 1594 PrincessAnna of Prussia (1576–1625)

• Anne Catherine (26 June 1575 – 29 March 1612)

married KingChristian IV of Denmark (1577–1648)

• Daughter (1576–1576)
• John George, Duke ofJägerndorf (16 December 1577 – 2 March 1624)

married Eva Christina of Württemberg (1590 - 1657), daughter ofFrederick I, Duke of Württemberg andSibylla of Anhalt

• 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 in 1609 DukeJohn Frederick of Württemberg (1582–1628)

• Daughter (1585 – 1586)
• Christian William (28 August 1587 – 1 January 1665) Archbishop and later Administrator of Magdeburg

married firstly, in 1615, PrincessDorothea of Brunswick-Wolfenbüttel (1596–1643)

married secondly, in 1650, Countess Barbara Eusebia of Martinice (d. 1656)

married thirdly, in 1657, Countess Maximiliane of Salm-Neuburg (1608–1663)

• Dieter Brozat (1985),Der Berliner Dom und die Hohenzollerngruft, Berlin: Haude und Spener,ISBN 3-7759-0271-6
• Ernst Daniel Martin Kirchner:Die Kurfürstinnen und Königinnen auf dem Throne der Hohenzollern, part 2:Die letzten acht Kurfürstinnen, Berlin, 1867,pp. 68–106.
• Ludwig Hahn:Geschichte des preussischen Vaterlandes, W. Hertz, 1858, p. 132
• Adolf Müller:Preußens Ehrenspiegel, Gebauer, 1851, p. 65

• Portrait of Catherine of Brandenburg-Küstrin in Google books
• Publications by or about Catherine of Brandenburg-Küstrin atVD 17

• House of Hohenzollern
• 1549 births
• 1602 deaths
• Margravines in the Holy Roman Empire
• People from Kostrzyn nad Odrą
• Electresses of Brandenburg
• Burials at Berlin Cathedral
• Daughters of monarchs

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