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Mary Guerard

This obituary is protected by copyright by MacCoubrey Funeral Home Limited. Proudly serving Northumberland County in the province of Ontario, Canada. All rights reserved.

Mary Guerard

June 18, 1946 - April 3, 2026

Mary passed away peacefully at Ed’s House Hospice Care Centre in her 80th year, following a lengthy battle with mesothelioma. Throughout her illness, she shared her experience with others to raise awareness of the dangers of environmental pollutants, toxins, and chemicals.
Mary was the beloved wife of Douglas Smith and a devoted mother to Michael Guerard (Trixia), and to her stepchildren Kim (Dan), Heather (Curtis), and Greg (Valerie). She was a loving Nana to Gavin, Zoe, Charlie, Evan, and Arthur. Mary was the cherished sister of Rosaleen (Chris), Peter (Lindsey), Margaret (Robert), and Catherine (Peter), and was predeceased by her brother Harry (Debby). She was an adoring aunt to her nieces and nephews.
Mary cherished and nurtured life-long friendships wherever life took her – from her early childhood in Manchester, England and Northern Ireland, to Napanee, Ontario, her education at Hotel Dieu Hospital/Queen’s University, and throughout her years living in Sault Ste Marie, Oshawa and Cobourg. In every place she called home, she formed deep and lasting connections, carrying those friendships with her throughout her life.
Mary was an accomplished professional as a nurse and academic. She led a vibrant life, staying active through tennis, biking, hiking, pickleball, and golf, and enjoyed the opportunity to travel and see the world with her beloved Doug. They delighted in bringing their friends and family together creating lasting memories. Mary brought the gift of her love of life to all.
Mary was deeply loved and will be profoundly missed by all who knew her.
In recognition of the wonderful care that Mary received, memorial donations to the Northumberland Hills Hospital Foundation or Ed’s House Northumberland Hospice Care Centre would be appreciated by the family.

Message Of Condolence

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MESSAGES OF CONDOLENCE / DONATIONS

Jan & Keith Withers - May 12, 2026 DONATION

A Memorial Donation has been made to the following charity:

Northumberland Hills Hospital Foundation

Jan & Keith Withers - May 12, 2026

We are deeply sorry to hear of Mary's passing Doug. Although we didn't have a lot of opportunity to get together Keith and I certainly enjoyed the visits we had with you & Mary. Our condolences to you and to let you know you are in our thoughts.

Thomas Rudd - May 11, 2026 DONATION

A Memorial Donation has been made to the following charity:

Ed's House Northumberland Hospice Care Centre

Heather, Curtis and Arthur - May 11, 2026 DONATION

A Memorial Donation has been made to the following charity:

Northumberland Hills Hospital Foundation

Katherine Johns - April 22, 2026

You are in my thoughts and prayers Douglas and family Sincerely Katherine Johns

Ernest Pope - April 22, 2026 DONATION

A Memorial Donation has been made to the following charity:

Northumberland Hills Hospital Foundation

Ernie Pope & Susanne Koehler - April 22, 2026

Doug It was so great to get to know you and Mary on our overseas bike trips. She was such a great person.

Alasdair & Jane Gillespie - April 21, 2026

Dear Doug and family, we were saddened to hear of Mary's passing. We first met Mary when we joined Amnesty International many years ago. Please accept our heartfelt condolences.

Carol Weir - April 20, 2026

Doug, So sorry to hear about Mary. She was a wonderful person who treated all as equals. We shall miss her visits to the store. Carol and Eliza

Thelma Tondeur - April 19,2026 - April 19, 2026

I was so saddened by the news of Mary's passing. We were next-door neighbours of Mary & Doug for years on The Esplanade. Mary was a kind, gentle, friendly neighbour and we had many cups of tea at Doug & Mary's home. My sincere condolences to all her family and especially you, Doug! We all will miss you, Mary !

Dianne Aru - April 18, 2026

I loved Mary as a cherished friend and it is very hard to envision a future without her caring presence

Susan Eddy - April 17, 2026

There is little one can add to the beautiful tribute for Mary. Being a neighbour and a friend of Mary and Doug's has been an honour for many years. Mary's love of life and the joy she shared with everyone will forever keep her in our memories. A donation to NHH is being made in memory of Mary. My sincerest condolences to Doug and family. Susan

Margaret & Mike - April 17, 2026

So sorry for your loss Doug. Mary will always be in our memories, thinking about all the good times we had down on the Esplanade, especially our ladies wine and cheese soirées with Kay on a Tuesday.

Charlotte Snelgrove - April 16, 2026

Mary, was a wonderful example of how to live life to the fullest. She was a positive influence on me and I will always remember the good times we had together. You will always be with me Mary. With my husband Doug and Mary’s Doug we had the most amazing times. Travel, cycling, laughing, eating great food. So many good memories.

Jim and Carol Scholes - April 16, 2026

Our heartfelt condolences to Doug and all the family. We were fortunate to have Mary be a part of our lives. Even through the latter struggles her thoughtfulness for others was always in the forefront. That torrential Northern English rain and fierce wind didn’t diminish her enthusiasm for our marathon treks. Many happy times to reflect upon-we will miss you dear friend.

Gary Polonsky - April 16, 2026

Mary was a wonderful person and colleague, instrumental in developing Ontario Tech U's foundational programs. RIP.

Cathy Morin - April 15, 2026 DONATION

A Memorial Donation has been made to the following charity:

Ed's House Northumberland Hospice Care Centre

Liz McCaughey - April 15, 2026

Mary was a lovely person and at one time enjoyed spending time at the Cobourg Yacht Club. I'm so sorry for your loss. My deepest sympathies.

ron wood - April 15, 2026

So sorry for your Goug and family she will be deeply missed by all who made her acquaintance. Ron and Jocelyne

Barbour Ann - April 15, 2026

Mary will be very missed. Her radient smile and love of life was obvious to all. Our condolences to you Doug and all her family.

Susan Fraser - April 15, 2026 DONATION

A Memorial Donation has been made to the following charity:

Northumberland Hills Hospital Foundation

Susan Fraser - April 14, 2026 DONATION

A Memorial Donation has been made to the following charity:

Ed's House Northumberland Hospice Care Centre