Von Euw, Mary Lou (Callahan), beloved wife, mother, grandy, favorite relative and friend, entered into the fullness of God’s love on January 18, 2026. Mary Lou was born in Newton, raised in Natick, lived in Lima, Peru, and spent her final days in Framingham, but was at heart a Bostonian after living for fifty years in West Roxbury. A graduate of Regis and Emmanuel Colleges, she earned a certificate in pastoral education in preparation for her career as an interfaith hospital chaplain at Tufts Medical Center. Prior, Mary Lou was a Sister of Saint Joseph, a school teacher, a counselor, and the Coordinator of Marriage Preparation for the Archdiocese of Boston. Along with her husband, David, Mary Lou authored a guide for engaged couples and played a key part in countless marriages both in that role and as a wedding officiant. While her daughter, Michelle, her son, David, her daughter in law Meaghan, her grandchildren Joey, Ryan, Vanessa and Lea, her brother Tom, her sisters in law Eleanor, Carolyn, and Joan, her best friend Irene, and all her friends and family will miss her spirit, her warmth, her kindness, and her coffee cakes, we are grateful that she will be welcomed by her mother, Betty, her siblings Annie, John, Bernadette and Flav, countless others who felt the power of her love, and most especially, her husband of 43 years, David. Visiting hours at the William J. Gormley Funeral Home, 2055 Centre St. West Roxbury on Wednesday, January 21 from 4-8pm. Funeral from the funeral home Thursday, January 22 at 8:30am followed by a Funeral Mass in St. Ignatius of Loyola Church, 28 Commonwealth Ave. Chestnut Hill at 10 o’clock.