Jan Maria Michał Kowalski
|This article does not cite any references or sources. (October 2009)|
At the time of his selection, he was the most important person in this Christian movement. He was consecrated bishop in 1909 by the Utrecht Union Old Catholic Archbishop Gerardus Gul. In 1919 the Mariavites officially changed their name to the Old Catholic Church of the Mariavites. Bishop Kowalski later called himself Archbishop.
Archbishop Kowalski was killed during World War II in the Nazi Hartheim Euthanasia Centre located in Alkhoven by the city of Linz in German-occupied Austria. He was one of the victims of the Nazi war criminal Karl Brandt who led the euthanasia Action 14f13.
Kowalski's successor was his wife, Bishopess Izabela Wiłucka. She was succeeded in 1946 by Bishop Józef Maria Rafael Wojciechowski. Wojciechowski died in April 2005 and was succeeded by Bishopess Beatrycze Szulgowicz.