John Albert I
Duke of Mecklenburg-GüstrowDied when: 50 years 51 days (601 months)
Star Sign: Capricorn
John Albert I, Duke of Mecklenburg, in older literature known as John or Johann (23 December 1525 – 12 February 1576), 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.
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