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