De Graeff na Amsterdam nọ n'ebe dị elu nke ike ha ma na 1656 ha mere njem nlegharị anya n'okpuru Michiel de Ruyter na Oké Osimiri Mediterenian na - na Charles X Gustav nke Sweden agha megide Poland
- ọzọ n'okpuru Jacob van Wassenaer Obdam n'Oké Osimiri Baltic. N'ụzọ na-enye obi ụtọ nye Netherlands, agha a biri na Danzig ịbụ nke e kwupụtara dị ka nke na-anọpụ iche. Ndị isi obodo anọ ahụ nwere obi ike kpebiri iziga Coenraad van Beuningen na Copenhagen iji kpalie Denmark ịlụ agha megide Sweden. N'ụzọ juru onye ọ bụla anya, n'etiti oge oyi, eze Sweden si Jutland gafee Great Belt, ruo Copenhagen. Na njem nke abụọ iji napụta Copenhagen, Witte de With sonyere na Agha nke Sound. Cornelis de Graeff dị njikere ịmalite ịlụso Sweden ọgụ, megide ndụmọdụ nke ndị isi ndị ezumike nka. Mgbe Charles nke Iri nwụrụ na mberede na 1660, Sweden mere udo. Amsterdam zigakwara Admiral Michiel de Ruyter megide ndị England, megide iwu nke nzuko omeiwu nke Netherlands. N'agbanyeghi ọdịiche ndị a na De Witt, ya na De Graeff nọgidere na ezi okwu. De Witt kwuru n'afọ 1660 banyere Cornelis, sị: "N'ebe nwoke a si Zuidpolsbroek nọ, ọ dịghị ihe ọ bụla ọ ga-eme".