Born Margaret, she entered the Congregation of the Holy Cross, Amityville, in 1940 and received her religious name, Sister Mary Quentin, a year later.
She taught at St. Catherine of Sienna, St. Albans; St. Patrick’s, Huntington, L.I.; St. Francis of Assisi, Long Island City; St. John the Evangelist, Riverhead, L.I.; and Incarnation, Queens Village.
Her funeral Mass took place Oct. 25 in St. Albert Chapel at Queen of the Rosary Motherhouse in Amityville. Burial followed in the sisters’ cemetery.