Albert Frederick, Duke of Prussia

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Albert Frederick (German: Albrecht Friedrich; 7 May 155328 August 1618) was duke of Prussia from 1568 until his death.

He was a son of Albert of Prussia and Anna Marie of Brunswick-Lüneburg. He was the second and last Prussian duke of the Ansbach branch of the Hohenzollern family. He exhibited signs of mental disorder. Early 1578, the regency was taken over by his cousin, Georg Friedrich of Brandenburg-Kulmbach (1539-1603).

Albrecht Friedrich was married in 1573 to Marie Eleonore of Cleves, a daughter of Wilhelm, Duke of Jülich-Cleves-Berg and Archduchess Maria of Austria (15311581). Maria was a daughter of Ferdinand I, Holy Roman Emperor and Anna of Bohemia and Hungary.

Albert Frederick and Marie were parents to seven children

At his death, the duchy passed to his son-in-law John Sigismund, Margrave of Brandenburg, combining the two territories under a single dynasty and forming Brandenburg-Prussia.

Albert Frederick, Duke of Prussia
Born: 7 May 1553 Died: 28 August 1618
Regnal titles
Preceded by
Albert
Duke of Prussia
1568-1618
Succeeded by
John Sigismund, Elector of Brandenburg