School Sister of Notre Dame John Martha (Dolores Lorraine) Knybel, 92, died March 14 at Presence Holy Family Long Term Acute Care Hospital in Des Plaines.

She was a vowed member of the School Sisters of Notre Dame for 70 years.

Sister John Martha was born in Chicago and was baptized and went to school at St. John Cantius before attending St. Stanislaus Kostka High School. After high school, she worked for a year in an office and attended evening classes at De Paul University.

She entered the congregation in 1944 and took final vows in 1953.

She taught in Milwaukee before coming back to Chicago in 1958 to serve as a teacher and librarian at Cardinal Stritch High School. She served at Chicago schools, including St. Stanislaus Kostka and the Academy of Our Lady, until 1997. She then served as receptionist at Resurrection Life Center for 14 years.