Prince. In English also called Charles. Vasa Dynasty. Duke of Vermillandia, Nericia and Sudermania. Son of King Carl IX and Queen Christina. He was born at Reval Castle during his parents' visit to Swedish Estonia in 1601. His father, youngest son of King Gustav I who founded Sweden's Vasa dynasty, was Duke of Sudermania and regent of the kingdom at the time. Along with his elder brother, Crown Prince Gustav Adolph, he was educated to be a staunch Lutheran under the tutelage of John Skytte. He was formally made duke by his father in 1609 who, however, died in 1611. His elder brother, the new King Gustav II Adolph felt genuine affection for him, as it was said, for his "many excellent qualities and his noble character." He was also a favorite of his mother, now queen dowager, who defended his interests against her elder son: at the coronation of 1617, she insisted his brother confirm the ducal rights in the three provinces Carl Philip held as fiefs in appanage. In 1611, during the Time of Troubles in Russia, Count Jacob De La Gardie proposed him to Novgorod as a candidate for election to be their next tsar. But when his father died shortly afterward, his mother refused to let the ten-year-old boy leave for Russia, nor did his elder brother, the new king, believe the Russians were seriously considering the proposal. In 1613, Carl Philip left for Viborg, where he was to discuss the terms of the tsardom, but after Russia appointed the first Romanov as Emperor Michael of Russia, he returned to Sweden. As duke of Sudermania, the appanage held by his father before becoming king, he was expected to eventually take up residence in its capital town, Nyköping. But during his minority, the duchy was administered by his mother and him remained at the royal court in Stockholm. In 1617, he visited Denmark, Germany and France. He later joined the army and accompanied his brother in 1621 as he waged war on Livonia. He distinguished himself during the siege of Narva in 1622, but succumbed to an illness there and died. It has been shown that his brother deeply mourned him. At the time of his death in 1622, he was the last feudal duke in Sweden (when King Gustav III re-introduced the title for a royal prince in 1772, it was merely an honorary title with no provincial authority). He had been secretly and morganatically married before he died and his widow bore him a daughter posthumously.