Date of Birth: 
Place of Birth: Wieliczna, Masovian Voivodeship, Masovian Voivodeship, Poland
About Feliksa Kozłowska
- Feliksa Magdalena Kozlowska (27 May 1862 – 23 August 1921), known by the religious name Maria Franciszka and the epithet "Mateczka", was a Polish Christian mystic and visionary who founded a movement of renewal in the Roman Catholic church in the Russian Partition of Poland.
- It was to follow the simplicity of the life of Mary, mother of Jesus.
- Early in the 20th-century, the movement was excommunicated and became an autonomous church in fellowship with the Old Catholic Church of the Netherlands.
- In 1935 it split in two and became the Old Catholic Mariavite Church and the Catholic Mariavite Church.
- Both denominations were part of a single schism from the Catholic Church which declared it as heretical in 1906.
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