Mezue ahịrịokwu na-esonụ: Na January 1656, Charles nke Iri Gustav nke Sweden mere Frederick William nke Mbụ, Onyeisi nke Brandenburg, ka ọ bụrụ onye na-achị Duchy nke Prussia. Ka ọ na-erule n'oge a bịanyere aka n'akwụkwọ nkwekọrịta nke Marienburg, atụmanya ndị Sweden n'agha ahụ ebelatawo, Charles nke Iri Gustav dịkwa njikere inye Frederick William nke Mbụ ụgwọ ọrụ maka ịlụ ọgụ n'akụkụ ya. Ọ bụ ezie na nke ikpeazụ a ga-anọgide na-abụ onye Sweden na-achị Prussia, e kwere ya nkwa na ọ ga-enweta ihe nketa na voivodships anọ nke Greater Poland iji kwụọ ụgwọ maka isonye na mkpọsa ndị Poland nke Charles X Gustav. Njikọ aka a gosipụtara mmeri na agha ndị sochirinụ
Agha nke Warsaw, mana ka mkpọsa ndị ọzọ kwụsịrị, Frederick William nke Mbụ ga-enweta ikike zuru oke na Prussia site na Nkwekọrịta nke Labiau na Nọvemba 1656.