Complex sentence: In 1893 Kozłowska, also known by her convent name "Maria Franciszka", had her first vision and was said to found the new religious movement of "Mariavitism" on 2 Aug 1893.
Split into simpler sentences: In 1893 Kozłowska, also known by her convent name "Maria Franciszka", had her first vision. She was said to found the new religious movement of "Mariavitism" on 2 Aug 1893.