Marilyn McCusker Shannon (67) was a lifelong Catholic, especially dedicated to the Traditional Latin Mass; a loyal and loving wife, mother, grandmother, daughter and friend; mother of nine, two through international adoption; a home school parent; for 35 years a part-time instructor of biology at Indiana Purdue Fort Wayne (now Purdue Fort Wayne; retired 2019). She is the author of five editions of Fertility, Cycles and Nutrition, the most recent published by The Couple to Couple League for Natural Family Planning in 2019; this interest gave her an attentive ear to women interested in natural health, and she spoke widely on the topic in the Midwest. She was an Allen County (IN) 4-H leader for eleven years, former Allen County 4-H Board member, and assistant leader until recently. She was a fancier of animals, especially dairy goats, dogs, cats, and poultry. She is survived by her beloved husband of 43 years, Ronald Shannon; children Fr. John Shannon, FSSP of Calgary, Alberta, Canada; Rosemary (Michael) Imrick of Fort Wayne, IN; Stephen (Katie) Shannon of LaPorte, IN; Gregory Shannon; Regina (Jared) Trout; Ellen Shannon, Vahn Shannon, Monica Shannon and Lucia Shannon, all of Fort Wayne; sister Rosemary (Richard) Nilles, brother David E. (Kris) McCusker, Jr., thirteen grandchildren, with two more on the way, and numerous nieces, nephews and cousins. She was preceded in death by her parents, David E. McCusker, Sr., and Margaret E. (Caulfield) McCusker, brothers, James McCusker, Mark McCusker, and infant brother William McCusker; and sister Nancy Benson. Traditional Latin Requiem High Mass will be 11:30 am, Saturday, May 23, 2020 at Sacred Heart Catholic Church, 4643 Gaywood Ave with calling from 10:00 am - 11:30 am. Visitation will be held Friday, May 22, 2020, 2:00 pm - 4:00 pm and 6:00 pm - 8:00 pm with a rosary recited at 6:30 pm at Divine Mercy Funeral Home, 3500 Lake Ave., Fort Wayne. Face covering is required, Stage 3 gathering of up to 100 people and still maintain social distancing will be followed. Burial will be in Catholic Cemetery, Fort Wayne. Memorial contributions may be made to the Women's Care Center, Fort Wayne. To sign the online guest book, go to www.divinemercyfuneralhome.com.