Albrecht Friedrich, Duke of PRUSSIA, MARGRAVE OF BRANDENBURG
He married Marie Eleonore von JÜLICH-Kleve-Berg 14 Oct 1573 at Königsberg, Ostpreussen, Prussia . Marie Eleonore von JÜLICH-Kleve-Berg was born at Kleve, Rheinland, Prussia 15 Jun 1550 daughter of Wilhelm IV Julich Kleve, Duke and Marie von Austria .
They were the parents of 7
children:
Anna Princess of Prussia, Electress of Brandenburg
born 3 Jul 1576.
Marie Princess of Prussia, Margravine of Brandenburg-Bayreuth
born 23 Jan 1579.
Albrecht Friedrich, Prince of Prussia
born 1 Jun 1580.
Sofie, Princess of Prussia
born 31 Mar 1582.
Eleonore (Marie) Princess of Prussia
born 12 Aug 1583.
Wilhelm Friedrich, Prince of Prussia
born 23 Jun 1585.
Sibylle (Magdalene) Princess of Prussia
born 31 Dec 1586.
Albrecht Friedrich, Duke of Prussia, Margrave of Brandenburg died 18 Aug 1618 at Fischhausen, Ostpreussen, Prussia .
Marie Eleonore von JÜLICH-Kleve-Berg died 23 May 1608 at Königsberg, Ostpreussen, Prussia .