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Male Johann III Mecklenburg Click to view Johann III Mecklenburg in the family tree

Johann III was born about 1269 in Schwerin, Germany.  Johann III's father was Heinrich I zu Mecklenburg and his mother was Anastasia Pomerania.  His paternal grandparents were Johann I Mecklenburg and Luitgard Henneberg; his maternal grandparents were Barnim I Pomerania and Marianna of Sweden. He had a brother and a sister, named Henry II and Luitgard.  He was the youngest of the three children.


Johann III's family with Helen Rugen

‌Johann III and Helen were married in a religious ceremony on November 3rd, 1288.  They had a daughter named Luitgard.

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