Kammala wannan jumla: An kira ta bayan mahaifiyar mahaifiyarta mai suna Holy Roman Empress Eleonora, wanda shi ma mahaifiyarta ne. An yi auren iyayen Eleonora ne da nufin karfafa da'awar reshen Nevers na Gidan Gonzaga zuwa Dukes na Mantua da Montferrat lokacin da babban layin zai mutu. Duke na Nevers, mai mulkin masarautar Faransa, dole ne ya fuskanci adawa da Ferrante II Gonzaga, Duke na Guastalla, wanda ya dogara da goyon bayan Daular Roman Empire, da Masarautar Spain da kuma Duchy na Savoy, kuma ta haka ne ya fara mulkin mallaka.
Yaƙin Mantuan Succession, wanda jariri Eleonora, tare da iyayenta da babban ɗan'uwansa Charles suka bar Mantua, amma suka dawo shekara guda bayan sanya hannu kan Yarjejeniyar Cherasco (19 ga Yuni 1631), wanda a karkashinsa aka amince da haƙƙin Duke Charles na Nevers a kan Dukes na Mantua (a matsayin mafi kusantar dangi na maza na layin Gonzaga) da Montferrat (saboda auren magajinsa da Maria Gonzaga, wanda ya tsira daga karshe na Gonzaga da kuma magajin wannan Duchy, wanda ya kasance yana da gado ta hanyar mata tun lokacin da Gonzagas ya samu ta hanyar aure ga Margherita Paleologa a 1540); duk da haka wata daya daga baya (30 Agusta 1631), mahaifin Eleonora ya mutu daga tarin fuka, kuma ya fara jerin rikice-rikicen siyasa tsakanin Duke Charles da surukinta, wanda ya ƙare tare da haramtawar 'yar Savoy Margaret (Maria) daga mahaifiyar Mantua.