Sejm in the beginning of February. 1501.
The sejm was convened by the king John I Albert in the end of year 1500. The proceedings began in the beginning of February and were finished probably on 6 March 1501, as on this day the resolutions were adopted. The legislations of the sejm held in 1501 were discovered in 19th century.
See: F. Papée, Jan Olbracht [John I Albert], Kraków 1936. K. Tymieniecki, Konstytucja z r. 1501 o przytwierdzeniu kmieci [Resolutions of year 1501, on attaching serfs to the land], in: Studia Historyczne ku czci Stanisława Kutrzeby [Historical studies in honour of Stanisław Kutrzeba], Kraków 1938, t. 1, s. 461-470. Ustawodawstwo zob. Volumina Constitutionum, T. 1, cz. 1, Design and layout prepared by S. Grodziski, I. Dwornicka, W. Uruszczak, Warszawa 1996, s. 96-99.