However, Sigismund, supported by some of the more devout and zealous nobility, was completely opposed to the conversion of the prince. From that point the planned Polish–Lithuanian–Muscovite union began to fall apart. Offended and angered by Sigismund, the boyars dragged their feet on supporting Władysław. They were divided between electing Vasily Galitzine, Michael Romanov (also 15 years old), or the second False Dmitriy. Żółkiewski acted quickly, making promises without the consent of the still-absent king, and the boyars elected Władysław as the new tsar. Żółkiewski had the most prominent of the opponents, Fyodor Romanov, Michael's father and the patriarch of Moscow, exiled from Russia in order to secure Polish support. After the election of Władysław, the second False Dmitry fled from Tushino, a city near Moscow, to his base at Kaluga. However, his position was precarious even there, and he was killed on 20 December by one of his own men. Marina Mniszech, though, was pregnant with the new "heir" to the Russian throne, Ivan Dmitriyevich, and she would still be a factor in Russian politics until her eventual death in 1614.