Which of Gustav I's sons also became kings of Sweden?
Eric XIV, John III, Charles IX
Gustav II, Eric XV, John IV
Charles X, Gustav III, Eric XVI
John II, Charles VIII, Gustav IV
Answer
Three of Gustav I's sons, Eric XIV, John III, and Charles IX, held the kingship at different points in time. They continued the legacy of the House of Vasa in ruling Sweden.
Unraveling the Reign of Gustav I: The Enigmatic King of Sweden (1523-1560)