Mary Kathleen Glavich, a Sister of Notre Dame and noted religious educator, is the author of the award-winning book The Confirmed Catholic's Companion (ISBN 978-0-87946-281-9), as well as The Catholic Companion to Mary (ISBN 978-0-87946-330-4) and The Catholic Companion to the Psalms (ISBN 978-0-87946-364-9). She lives and works in the Diocese of Cleveland, Ohio.