Sister of St. Agnes Sister Mary Dennis (Mary Therese) McMahon, 92, died Sept. 22 in Fond du Lac, Wisconsin.

Born in Chicago, she graduated from Immaculate Conception High School, Elmhurst, then entered St. Agnes Convent, Fond du Lac. She was in her 72nd year of her religious life.

Sister Mary Dennis ministered as an elementary-grade teacher and was principal both in grade and high schools in Illinois, Indiana, New York and Wisconsin for over 50 years.

In the Archdiocese of Chicago, Sister Mary Dennis served at St. Nicholas, Evanston (1951-1956, 1969-75), St. Zachary, Des Plaines (1963-1969), St. Joseph (Orleans Street) (1988-1992) and St. Thomas of Canterbury (1992-2001).