The Lwów Oath (Polish: Ślubylwowskie) was an oath made on April 1, 1656 by Polish king John II Casimir in Latin cathedral in the city of Lwów (today Lviv...
Archived from the original on 7 May 2019. Retrieved 5 August 2019. "Ślubylwowskie po 350 latach – Lwów, 1 kwietnia 2006". lwow.com.pl (in Polish). Archived...
Weneda, Król-Duch, and Aleksander Fredro, with autographs of Pan Jowialski, Śluby panieńskie, Zemsta and Dożywocie, and the autographs of works by Seweryn...