Sophia of Schleswig-Holstein-Gottorp was regent of the Duchy of Mecklenburg-Schwerin from 1603 to 1608. Wikipedia
Born: June 1, 1569, Gottorf Castle, Schleswig, Germany
Died: November 14, 1634 (age 65 years), Schwerin, Germany
Great-grandparents: Christian I of Denmark, Dorothea of Brandenburg, Barbara Jagiellon, and more
Parents: Adolf, Duke of Holstein-Gottorp and Christine of Hesse
Children: John Albert II and Adolphus Frederick I