Peacefully passed away at the age of 60 on Sunday October 2, 2016 at Lakeridge Health in Oshawa.Beloved and proud mother of Christina (Nicolas), Elise (Andre) and Steven Ihasz.Teresa was born in Toronto to parents Arthur and Rose Gaston.She is survived by siblings Ronald Gaston (Diann), Connie Peltomaki (the late Hannu), Leona Winteringham (Terry) and Suzanne Gaston.Predeceased by her brother Larry Gaston. She spent her adolescent years growing up in Mississauga.In her adult years she moved to Toronto where she began working for the Ministry of Finance.Shortly after that her office moved to Oshawa where she finished out 35 years of service. She was an amazing mother, beloved sister, daughter and aunt.She will always be remembered for her incredible sense of humour and her wonderful laugh. She was well loved by many and left a positive influence on everyone she met.Relatives and friends may call at McINTOSH-ANDERSON-KELLAM FUNERAL HOME LTD., 152 King St. E., Oshawa (905-433-5558) on Friday from 2 – 4 p.m. and 7 – 9 p.m. with prayers being said during the afternoon visitation.Mass of Christian Burial will be held at St. Gertrude’s Roman Catholic Church, 690 King St. E., Oshawa on Saturday, October 8th, 2016 at 10:00 a.m. with cremation to follow.Donations in memory of Teresa are being accepted for the Multiple Sclerosis Society of Canada. To donate please contact the funeral home.