at the end of 1685 the Imperial army surrounded the last remaining stronghold, the castle of Munkács, Ilona Zrínyi alone defended the castle for three years against the forces of General Antonio Caraffa, after the recapture of Buda, the situation became untenable and on 17 January 1688 she had no choice but to surrender the castle, with the understanding that the defenders would receive amnesty from the Emperor, and that the Rákóczi estates would remain in her children's name, under this agreement she and her children traveled immediately to Vienna, where in violation of the pact the children were taken from her,