Peacefully at Royal Victoria Hospital in Barrie on Wednesday, October 21, 2015. Agatha Robertson (nee Hergaarden) of Barrie at the age of 91. Beloved wife of the late Harold Robertson (2001). Dear mother of Gladdie (Chris Thomas) of Kearney, Bonnie (Marian Michalak), Diane Robertson all of Mississauga, Jim (Lillian) of London and Lisa Tannahill (Todd Bowman) of Barrie. Sadly missed by ten grandchildren Lora (Jay Field), Andrew Michalak (Lisa), Julie (Chad Weber), Sarah (Jeremy Geer), Craig Thomas (Shona), Alexandra Robertson, Matthew and Katie Robertson and Lucas and Lindsay Tannahill and eight great grandchildren plus one on the way. Former mother in law of Bruce Tannahill of Owen Sound. Predeceased by her brother Herman. Friends are invited to the Steckley Gooderham Funeral Home, 30 Worsley Street, Barrie on Sunday from 2-4 p.m. The Funeral Mass will be celebrated at St. Mary’s Church, 65 Amelia Street, Barrie on Monday morning at 10 o’clock. Interment, Greenwood Cemetery, Owen Sound at a later date. Memorial donations to the Canadian Cancer Society or Residential Hospice of Grey Bruce would be appreciated.