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.
- Occupation
- aristocrat
- Position held
- duke
- Citizenship
- Germany
- Born
- December 23, 1525
- Died
- February 12, 1576, February 10, 1576, 1576
