 Nyorera kupfuurira kweiyi ndima - Munguva yekupinda kweMongolia yekutanga muHungary, Nicholas akapinda muhondo ine njodzi yeMohi musi waApril 11, 1241, kubva kwaakatiza pamwe namambo Béla IV weHungary kuenda kumahombekombe eDalmatian. Maererano netsamba yamambo yokupa mari 1249, Nicholas akatumirwa kumisangano yezvematongerwe enyika mumatambudziko akawanda asina kutaurwa mumakore akatevera. Kuva womumhuri yemwana muchinda uye mugari wenhaka Duke Stephen, Nicholas akashanda se ispán weDubbica County kubva muna 1244 kusvika muna 1249, iyo yakanga yaiswa muLower Slavonia. Ari pachinzvimbo ichi, akarwisa vapanduki muBosnia pakati pa1244 na1246. Nicholas akanga aripowo paHondo yeRwizi rweLeithamusi wa15 June 1246, uko vaHungary vakakundwa asi muvengi wavo, Frederick the Quarrelsome akaurayiwa. Muna 1249, Nicholas akagadzwa somuchengeti wemari mudare ramambo raStephen. 