of the city of Konstantynów, founder of churches in Konstantynów. BedaOstaszewski (1764–1834) – prior of the Benedictine monastery in Pułtusk in 1802–1815
muszce. Obraża i przeraża". Gazeta Wyborcza. Retrieved 8 November 2023. Ostaszewski, Krzysztof. "The Market Solution to Economic Development in Eastern Europe"