Nyora kupfuurira kweiyi ndima - Zrinski akatozviratidza mumakore ekutanga makumi maviri panguva yekukombwa kweVienna
muna 1529, nokuda kwacho akapiwa bhiza necheni yegoridhe. Mushure mekufa kwababa vake Nikola III muna 1534, Nikola IV nemukoma wake mukuru Ivan I vakagara nhaka muPounje, uye panguva imwechete vakatanga kuvasimbisa pamwe nekuita hukama nemaOttomans, avo vaibhadhara mutero wegore negore sababa vavo. Zvisinei, pakati pa1537 na1540 vakatanga kurwisana nemauto aGazi Husrev-beg kuti vatonge Fort Dubica.