Tuhia he whakamāramatanga mō tēnei wāhanga - I te tau 1627, ka mate te Duke Vincent II, kāore he uri, ka mutu te rārangi taketake o Gonzagas. Mai i te tau 1628 ki te tau 1631, he pakanga whai muri
i whawhai i waenga i te Duke o Guastalla, i tautokohia e te Emepaea o Roma Tapu, me te Duke o Nevers, i tautokohia e France, mo te mana o te Duchy o Mantua. I te mutunga, ko te Duke o Nevers anake i mohiotia hei Duke.