Christina of Sweden. She was the only surviving legitimate child of King Gustav II Adolph and his wife Maria Eleonora of Brandenburg. As the heiress presumptive, at the age of six she succeeded her father on the throne of Sweden upon his death at the Battle of Lützen. Being the daughter of a Protestant champion in the Thirty Years' War, she caused a scandal when she abdicated her throne and converted to Catholicism in 1654. She spent her later years in Rome, and died there in 1689.