Adolf Frederick I (15 December 1588 – 27 February 1658) was the reigning Duke of Mecklenburg-Schwerin

Mecklenburg-Schwerin

Mecklenburg-Schwerin was a duchy in northern Germany created in 1348, when Albert II of Mecklenburg and his younger brother John were raised to Dukes of Mecklenburg by King Charles IV...

 from his father's death in 1592 until 1628 and again 1631–1658. Between 1634 and 1648 Adolf Frederick also ruled the Prince-Bishopric of Schwerin as its administrator.
He was a son of Johann VII of Mecklenburg-Schwerin

Johann V-VII, Duke of Mecklenburg-Schwerin

Johann VII of Mecklenburg Johann VII of Mecklenburg Johann VII of Mecklenburg (7 March 1558 (Güstrow) - 22 March 1592 (Schwerin) (sometimes called Johann V, and sometimes translated to John VII or John V) was a Duke of Mecklenburg-Schwerin....

 (1558–1592) and Sophia of Schleswig-Holstein-Gottorp (1569–1634), daughter of Adolf, Duke of Holstein-Gottorp

Adolf, Duke of Holstein-Gottorp

Adolf of Holstein-Gottorp was the first Duke of Holstein-Gottorp from the line of Holstein-Gottorp of the House of Oldenburg....

 (1526–1586) and his wife Christine of Hesse

Christine of Hesse

Christine of Hesse-Kassel was Duchess consort of Holstein-Gottorp as the spouse of Duke Adolf of Holstein-Gottorp. She exerted some political influence as a widow in 1586.- Biography :...

 (1543–1604).

At first Adolf Frederick and his brother Johann Albrecht II reigned under the guardianship of Duke Ulrich III of Mecklenburg-Güstrow and Charles I of Mecklenburg (his father’s uncles).