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Sister Monica Kostielney Rsm

Sister Monica Kostielney Rsm

1937 - 2025

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Sister Monica Kostielney, RSM. Beloved Sister of Mercy for nearly 70 years, passed away peacefully on April 28, 2025 at Little Company of Mary Hospital in Evergreen Park, Illinois. She was born on November 15, 1937 in Detroit, Michigan. Beloved daughter of the late Helen (Matyniak) and Walter...

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