Johann Adolf of Holstein-Gottorp was a Duke of Holstein-Gottorp. Wikipedia
Born: February 27, 1575, Gottorf Castle, Schleswig, Germany
Died: March 31, 1616 (age 41 years), Schleswig, Germany
Great-grandparents: Christian I of Denmark, Anna of Mecklenburg-Schwerin, Dorothea of Brandenburg, and more
Parents: Adolf, Duke of Holstein-Gottorp and Christine of Hesse
Grandparents: Frederick I of Denmark, Sophie of Pomerania, Philip I, Landgrave of Hesse, and more