John Albert I
John Albert I, in older literature known as John or Johann, was the reigning duke of Mecklenburg-Güstrow from 1547 to 1556 and of Mecklenburg-Schwerin from 1556 to 1576. In 1549 John Albert I saw to it that the parliament of Mecklenburg carried through the Reformation for the entire duchy.
23 December 1525
Born on the same birth day (23 December): Cody Ross • Emperor Zhenzong • Joan Severance • Jorma Kaukonen • Mallory Hagan • Megan Mayhew Bergman • René Tretschok • Ron Allen (baseball) • Sekou Doumbouya • Stefan Hell
Born in the same month (December 1525): Tadeáš Hájek