Entered into rest at the Kingston Health Sciences Centre on Wednesday February 24, 2021. Claire (Fortier) Mack of Brockville aged 81 years. Beloved wife of the late Dave Mack. Dear mother of Brenda Plotz (Barry) of Brockville, Allan Mack of Ottawa, JoAnn Mack of Brockville and Steve Mack of Ottawa. Cherished Nan of Ryan Mack (Katie), Jen Pettigrew (Scott), Brody Plotz (Darby) and Brandon Mack; and great Nan of Rory and Audrey Pettigrew, Hannah and Petra Plotz . Daughter of the late Henri and Annette (Giroux) Fortier; and sister of the late Claudette Arbour and Ronald Fortier. Sister-in-law of Jules Arbour, Jeannine Fortier, Doug Mack (Maryvonne), Barb McLellan, Bev McGill (Charles), Mary Mack and the late Ron and Stewart Mack (Aileen), Joan Kelly (Tom), and Jim McLellan. Also survived by several nieces and nephews. Due to COVID restrictions a Private Family Service will be held followed by cremation. In memory of Claire, donations to the Alzheimer Society of Lanark Leeds and Grenville or the Leeds Grenville Ontario SPCA would be gratefully acknowledged by the family. Arrangements entrusted to the Barclay Funeral Home, 137 Pearl Street East Brockville. Messages of condolence may be made online at www.barclayfuneralhome.com.