This was resolved with the Ostrów Agreement -- Vytautas became the Grand Duke of Lithuania while Jogaila retained rights of an overlord . This was solved with the Ostrów agreement -- Vytautas became Grand Duke of Lithuania , while Jogaila retained the rights of an overlord .
Ini diselesaikan dengan Perjanjian Ostrw - Vytautas menjadi Duke Besar Lithuania manakala Jogaila mengekalkan hak seorang tuan. Ini diselesaikan dengan perjanjian Ostrw - Vytautas menjadi Grand Duke Lithuania, manakala Jogaila mengekalkan hak-hak seorang tuan.