School Sister of Notre Dame Mary John (Geraldine) Zielinski, 90, died Nov. 29, 2020.

Born in Chicago, she was baptized at St. Stanislaus Kostka Parish. She entered the School Sisters of Notre Dame at the Milwaukee motherhouse in 1949, professed first vows in 1952 and professed final vows in 1958.

She came to the community with a “feel” for tools, having worked in a Chicago hardware store, and “when she decided to accept a religious life, she set only one condition—that she be permitted to bring her carpentry tools with her when she took the veil,” her community said. 

She ministered in the printing room and as a cook and refectorian and as a licensed building engineer, heading a crew of four men at the community’s campus in Mequon, Wisconsin.

In 1984, Sister Mary John moved to the Academy of Our Lady in Chicago, where she served as maintenance supervisor and consultant for the physical plant there. When the school was sold to the International Charter School—Longwood Campus in 1999, she continued on staff until she retired in 2003. In 2005, she moved to Marian Village in Homer Glen, Illinois, and in 2008 to Resurrection Life Center, in Chicago, where she resided until her death.