• 30 June 1818 : the
Diocese of Włocławek is renamed (after the
papal bull Ex imposita nobis)
Diocese of Cuiavia-Kalisz with the seat in Kalisz for over a century but this diocese returned to its first name on 28 October 1925. • 25 March 1992: Established as the Diocese of Kalisz from the
Diocese of Częstochowa,
Metropolitan Archdiocese of Wrocław and
Metropolitan Archdiocese of Gniezno • 25 June 2020: Pope Francis relieves Bishop
Edward Janiak, age 67, of his responsibilities while he is investigating on charges of protecting "predator priests" who committed acts of sex abuse. On October 17, 2020, Pope Francis permanently removed Janiak as Bishop of Kalisz. ==Special churches==