John of Denmark was the eldest child of King Christian II and Queen Isabella of Denmark and Norway. Wikipedia
Born: February 21, 1518, Copenhagen, Denmark
Died: August 11, 1532 (age 14 years), Regensburg, Germany
Parents: Christian II of Denmark and Isabella of Austria
Great-grandparents: Christian I of Denmark, Isabella I of Castile, Dorothea of Brandenburg, and more
Uncle: Charles V
Grandparents: John, King of Denmark, Christina of Saxony, Juana I of Castile, and more