Canadian Medical Association

Burlington, Ont.; National University of Ireland (UCD), 1948; public health. Died April 25, 2018, aged 94. Survived by 5 children, 13 grandchildren and 2 great-grandchildren. “When her husband, Dr. Alan McCallum, died in 1967, Roisin was widowed at age 43. With help from her physician colleagues in Kitchener-Waterloo, Roisin attained her Canadian medical licence, returned to practice and raised 5 children on her own. She practised public health at the Waterloo Regional Health Unit for 26 years, retiring as medical officer of health. She was esteemed by colleagues and staff for her quiet and steadfast competence, and loved by her family.”