The hetman, the army, and the representatives of Southern Russia took the oath of allegiance to the Tsar. The result of this action was a war between the Commonwealth on one side, and Northern and Southern Russia on the other. The Commonwealth being thus occupied on the east, Sweden decided to attack on the west. The war between Russia and the Commonwealth lasted thirteen years, and ended with a truce of thirteen years more, made at Andrusovo. By this agreement the city and province of Smolensk went to Russia, and all the left bank of the Dnieper, while Kieff was to be occupied by Poland after two years. This truce became a treaty during the reign of Sobyeski. Kieff remained with the Russians, and peace was unbroken till the second half of the following century, when all Russia west of the Dnieper was restored to the East in nearly the same limits which it had before the Tartar invasion; excepting the territory included in Galicia, and known as Red Russia. Jeremiah Curtin. Smithsonian Institution, Bureau of Ethnology, November 25, 1891. REMARKS ON PERSONAGES IN "THE DELUGE." Yan Kazimir was a son of Sigismund III., who was a son of King John of Sweden and Catherine, daughter of Sigismund I. of Poland. John of Sweden was succeeded by his son Sigismund, who under the name of Sigismund III. was elected King of Poland in 1587 to succeed his mother's brother, Sigismund Augustus, the last descendant of Yagyello in the male line. Sigismund III. was dethroned by the Swedes, and his issue excluded from the succession. Duke Charles, the ablest of Gustavus Vasa's sons, and uncle of Sigismund, was made king as Charles IX. This Charles IX. was father of Gustavus Adolphus. Gustavus Adolphus was succeeded by his only daughter, Christina, who would not marry, and who after reigning for a time resigned in favor of her cousin Karl Gustav of Zweibrücken,[3] son of the only sister of Gustavus Adolphus. Gustavus Vasa was therefore the great-grandfather of both Yan Kazimir and Karl Gustav, who were thus second cousins. The Polish Vasas laid claim to the Swedish crown, thereby causing the Commonwealth during sixty years much loss in money and men. Yan Kazimir relinquished this claim when he made peace with Sweden. Before his election Yan Kazimir, being a cardinal, was dispensed from his vows by the Pope. Chosen king, he married Louise Marie, daughter of the Duke of Nevers, a woman of strong will and much beauty.