  Twardowski and Ajdukiewicz (appointed professor in 1928) remained in Lvov. They trained a group that included Izydora Dąmbska (1904–1983), Maria Kokoszyńska (1905–1981), Henryk Mehlberg (1904–1978) and Zygmunt Schmierer (?–1943). Although Twardowski’s students also taught at other Polish universities (Czeżowski in Vilna, Zawirski in Poznań and Kraków), Lvov and Warsawa were the main centres of the LWS. The school was also joined by a group of catholic philosophers, including Father Innocenty (Józef) M. Bocheński (1902–1995) and Father Jan Salamucha (1904–1944).