A romantic figure appears at this time in the person of John Casimir, who after many adventures ascended the throne of Poland. In spite of the remonstrances of his mother he not only refused to dispute the claim of his elder brother, but espoused his cause, fought loyally for his election and was the first to congratulate him when chosen. He then withdrew from Poland and we find him, first, as an officer in the imperial army, and at the head of a league against France. Afterwards, while in command of a fleet in the Mediterranean, he was driven ashore near Marseilles by a storm; he was recognized and kept in prison for two years, but was finally released at the request of his brother. In passing by Loreto, on his way home, the fancy of becoming a Jesuit seized him. He applied for admission and was received, but left three or four years afterwards, and, though not in orders, was made a cardinal. When the news of his brother's death arrived, he returned the red hat to the Pope and set out for Poland to claim the crown, and simultaneously that of Sweden. The latter pretence, of course, meant war with Gustavus Adolphus, who forthwith invaded Poland, but Casimir drove him out and also expelled the Prussians from Lithuania. Probably on account of the dissensions in his own country which gave him occupation enough, he ceased to urge his rights to the throne of Sweden, and after some futile struggles relinquished that of Poland likewise. In the Convocation of Warsaw where he pronounced his abdication, he is said to have made the following utterance which sounds like a prophecy but which may have been merely a clever bit of political foresight. "Would to God," he exclaimed "that I were a false prophet, but I foresee great disasters for Poland. The Cossack and the Muscovite will unite with the people who speak their language and will seize the greater part of Lithuania. The frontiers of Greater Poland will be possessed by the House of Brandenburg; and Prussia, either by treaty or force of arms, will invade our territory. In the dismemberment of our country, Austria will not let slip the chance of laying hands on Cracow." John was the last representative of the House of Vasa. He was succeeded by Michael, who reigned only three years (1669-72) and then the great Sobieski was elected after he and his 20,000 Poles had routed an army of 100,000 Tatars--an exploit which made him the country's idol as well as its king.