Rubuta ci gaba don wannan sakin layi - A cikin 1523, George na Schellenberg dole ne ya sayar da Krnov ga Hohenzollern margrave George na Brandenburg-Ansbach, wanda zai iya dogaro da gadon Hungary na matarsa Beatrice de Frangepan, gwauruwar Matthias Corvinus. Daga 1532 margrave ya yi sarauta a kan dukkanin Upper Silesia, lokacin da ya kuma gaji Duchy na Opole da Racibórz daga Piast duke Jan II mai kyau. Ya sake gina Gidan Krnov kuma ya gabatar da gyaran Furotesta a Silesia, tare da korar masanan Teutonic na gida, Franciscans da Minorites. Ferdinand I na Habsburg, Sarkin Bohemia tun daga 1526 ya yi shakkar karuwar ikon Protestant House of Hohenzollern a cikin ƙasashen kambi na Silesian. Duk da haka, George da ɗansa Margrave George Frederick, wanda ya yi sarauta daga 1543, sun sami damar riƙe da duchy. Rikicin ya tsananta lokacin da George Frederick ya mutu ba tare da haihuwa ba a 1603 kuma ya bar Krnov ga dan uwansa Elector Joachim III Frederick na Brandenburg, wanda ya ba shi dansa Johann Georg a 1607. Shugabannin Habsburg sun dauki daular a matsayin mai juyawa kuma bayan juyin juya halin Bohemian da yakin White Mountain na 1620
Sarkin sarakuna Ferdinand na II ya kwace dukiyar Hohenzollern a ƙasashen Bohemia. Ferdinand mai aminci mai goyon bayan Yarima Karl I na Liechtenstein, Duke na Opava tun 1613, ya sami Krnov. Dukansu duchies sun haɗu a cikin 1623 kuma an ƙaddamar da su zuwa ga Counter-Reformation.