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Born in Rotherhithe, London , England to parents John Henry and Ivy Elizabeth Tondeur. He attended Naval Training School in Wales. After graduating he joined the Merchant Navy at the age of 16 and travelled the world until he decided to give up the sea career and move to Canada in 1955. He began his life here in Toronto initially, working for the Department of Highways as a surveyor. In 1967 he went to Queen's University in Kingston and earned a Bachelor Degree of Science in Civil Engineering. The family moved to Sudbury before moving to Cobourg in 1978 where he became the County Engineer for Northumberland until retirement in 1996. He was a proud member of the Rotary Club of Cobourg and volunteered on many Cobourg organizations. He was the beloved husband of Thelma Tondeur (nee Donaldson) for 61 years. Loving father of Lisa Elliott (Tom), Jonathan Tondeur (Stephanie), Cory Tondeur, Michele Heffernan (Tom) and Paul Tondeur. Cherished Papa of Reghan Flint (Trevor), Scott Elliott (Jenna Lee), Brock Elliott (Molly), Grant Heffernan (Emily), Matt Elliott (Drew), Kate Elliott (Tyler), Blake Heffernan (Rebecca), Cole Tondeur, Sophie Heffernan, Emmett Tondeur-Sampson and four great-grandchildren Benjamin Heffernan, Nora Flint, Theo Heffernan and Dawson Flint. He leaves his sisters, Sylvia (Ted) in England and Jean (Howard) in Fort Erie, ON. A private family graveside service was held in Hilton Cemetery, Brighton. A celebration of life will be held at a later date in the spring. If desired donations may be made to the Canadian Cancer Society, Saint Elizabeth Foundation or Northumberland County - Community Paramedicine.
My deepest sympathy Thelma to you and the entire family.I was saddened to learn of Jon’s passing.He was a kind,gentle person,always willing to help.Jon and You were so kind in helping Norma and me.I am thinking about you and all your family during this difficult time.
Dear Thelma: Rae and I are very sorry for your loss. If we can be of any assistance, we would be pleased to help. Marilyn
Our deepest sympathies Thelma to you and the entire family. We are so sorry for your loss. Sincerely, Sharon, Rob, Robbie & Mitch Day
A Memorial Donation has been made to the following charity:
Canadian Cancer Society
Thelma Joan I am so sorry for your lose. Jon was such a good friend to Ray and am sure he will be missed greatly by you and your family. I am sure he and Ray are discussing County matters as we speak. Sending my love and condolences.
I fondly remember Jon as a fellow classmate of Science ‘72. A friend to all.
A Memorial Donation has been made to the following charity:
Northumberland County - Community Paramedicine
Sorry to hear of Jon's passing. My thoughts are with the Tondeur family. May the memories help you get thru this sad time. Hugs to all❤
Thinking of you all at this difficult time. My thoughts are with you and your families. Keep the memories alive
I’m so sorry to hear this. My condolences to the whole family.
A Memorial Donation has been made to the following charity:
Canadian Cancer Society
A Memorial Donation has been made to the following charity:
Northumberland County - Community Paramedicine
Thelma, you and your family are in my thoughts. I was saddened to learn of Jon's passing. He was a kind, gentle person, always willing to take time to stop and engage in conversation as I walked by along the Harbour. Jon and you were so kind to visit with my father, Jack, over the past 3 years at NHH, providing support and encouragement to him. Dad will miss being able to knock on your door when out with his PSW's and engage in conversation with you and Jon. Hang onto your memories, and share them often with family. He will always be with you, and all those he touched.
Thelma we are so very sorry to hear of Jon's passing. We have such wonderful memories of out tones together. Wayne loved working with Jon and often speaks of him. We are thinking about you and all of your family during this difficult time.
We were saddened to learn of Jon`s passing. I had the opportunity to work with Jon (1994-2003) at Northumberland County Council where he was the county engineer. He was always so professional and dedicated to his work. He definitely made a difference.
Thelma and Family My condolences to you and your family with the passing of Jon. I was not aware of his passing until just recently. I worked with Jon for over five years at the County in the early 90's. He was a very knowledgeable and strong department head who handled his duties in a very professional, calm and controlled manner. In the last six years I also worked with Jon on a community organization and again his leadership was evident in how he was able to achieve successful results. He will be missed. RIP Jon Don
Thelma, so sorry to hear of Jon's passing. Fondly remembered from our time together with M.T.O. Sudbury and Sudbury District Boy Scouts. Our sincere condolences to you and the family.
I was deeply saddened to hear about the passing of Mr. Tondeur. I am thinking of you all as you celebrate what was truly a remarkable life.
To all the Tondeur family my condolences on the loss of a great man. I had the honour of working and learning under Jon at Northumberland County. He was the boss but bigger then that he truly cared about his staff and stood behind us thru good and tough times. Thanks Jon you have earned your rest.
A Memorial Donation has been made to the following charity:
Canadian Cancer Society
Thelma & Family, I have great memories of my time working with Jon in the County Roads Department. Always willing to share amazing stories and experiences and very supportive of his staff. He was very proud to be our County Engineer. My thoughts are with you.
Our deepest sympathy.. Thinking of you all in this difficult time.
Thelma and family I was so sorry to hear of Jon's passing. Jon was such a giving individual and I enjoyed working with him on Rotary committees and projects. You are in my thoughts and prayers during this difficult time.
Dear Thelma, We were so saddened to hear of John’s passing, even though we know he has struggled with his health in recent years. Death is so final, yet there can be peace and Andrew and I pray that you will know a peace beyond our human understanding at this time. I have always had an unspoken connection with John since he and I spent hours at the palliative bedside of his good friend Alf Blything. John had a kind heart and a gentleman’s demeanor. Your love and care for him was so evident in these last months, may you be now be comforted.
Thelma we just wanted to let you know how sorry we were to hear about Jon. We are keeping you and your family in our thoughts at this time. Keep well, hugs to all. Christine and Frank
Dear Auntie Thelma, Lisa, Jonathan, Cory and Paul, grandchildren and great grandchildren, so very sorry to hear the sad news of Uncle Jonny's passing. I have lovely memories of being in Canada as a teenager with Nanny and also all the times Uncle Jonny and Auntie Thelma visited and the whole extended family. He was always so interested in sharing family history and I have a lovely photo he gave me of lovely photo Phoebe Tondeur which is on display in my home. Sending you all much love, Alison, Naresh, Phoebe and Alexander xxx "Memories...let them fill your mind, warm your heart and lead you through" x
Dear Thelma and family, Linda and I are so sorry to hear of Jon’s passing. He was so energetic and had such a great social conscience. Both of us always enjoyed our conversations with both of you. Please accept our most sincere condolences and a virtual hug from us. Linda and Dave
To the Tondeur family: John was a strength to the County of Northumberland as Engineer. Not only did I work with him with on County Council but I had the pleasure of relying on his expertise when I joined the Administration Dept. with the County. So sorry for your loss, he will be missed.
A Memorial Donation has been made to the following charity:
Northumberland County - Community Paramedicine
We sadden by the news of Jon’s passing. Our deepest condolences to Thelma and to all the Tondeur family. Hugs Young Mee and Roger
Paul and family, thinking of you during this time
Condolences to Thelma, Lisa, Jonathan, Cory, Michelle and Paul and all the grandchildren and great grandchildren. Jon was a great genealogist and loved exploring family history! We’ll miss all the ongoing stories he had to tell about distant relatives. His sudden demise was a great shock to us. He was our only brother and may he rest in peace. Jean, Howard, Joshua and Simon.
Thinking of you during this sad time. Our sincere condolences to your whole family.
So sorry for the loss of your dearest father and husband. May he rest in peace.
To a very special Uncle John who always made time on his visits to the UK to share with us wider knowledge of the family history both in Canada and the UK. He always had a driving interest to understand what we were doing and how our lives were progressing. My fondest memories as I grew up were seeing Uncle John and his sister (my mum) Sylvia enjoying spending time together and reminiscing over the old times. With the many trips and parties for the wider family it was a pleasure seeing Auntie Thelma, Dad, Mum and Uncle John and all the wider family together enjoying each others company. It is very sad news in Uncle Johns passing but he is a man who shared lots of memories, lots of love and will be very missed by our family. All our love Chris, Sarah, Max and Ted xxxx Masters Family
Michele and Tom sorry to hear of your Dads passing our condolences to you and the rest of the family.
Our sincere condolences.
Love and hugs to you all. Your memories of John will forever be in your hearts.
Thinking of you Lisa and Tom, our sincere condolences to your family.
Thinking of all of you during this challenging time of loss and grief. Sending many virtual hugs and much love.
I am so very sorry to hear of John’s passing. My thoughts are with you all at this difficult time.
Sending warm thoughts and strength to your families at this sad time. May you find joy in your many happy memories together!
Lisa & Tom - Thinking of your family during this difficult time.
Michele & Tom - our thoughts are with your family during this sad time.
Sending our deepest sympathy to your whole family. Our thoughts are with you.
My brother Jack and I would like to express our heartfelt condolences to Thelma and family. We appreciate what good friends you were to Mom and Gord.
Our sincere condolences at this sad time to Thelma and family.
My sincere condolences to the entire Tondeur family on the tragic loss of Jonathon Henry. Extra special condolences go to my ex- brother-in-law, Jon, whom I have always considered to be a good friends even though I haven’t spoke to him in over 15 years. Gregg Shore MD.
To Auntie Thelma and family I have many memories of trips with my nanny Ivy Tondeur to Canada as a child. My godfather always remembered with love. Love Deborah and Richard Deborah and Richard Howett
Our deepest condolences to you Thelma and the Tondeur, Heffernan and Elliott families. You have a lot of wonderful memories to hold onto. We are thinking of you all at this time.
Our deepest condolences to you all at this most difficult time. Our thoughts are with you Rudi and Linda Hrncir and family ❤️
Thelma and family, we offer our heartfelt condolences on John's passing. John was a caring and loving man who gave to his community and always thought of others. He was a pleasure to be with on Rotary projects and socials. He worked hard but had fun doing it. He will be missed.
So sorry for your loss. Your family is in our thoughts and prayers during this difficult time.
Thelma and family. We have lost a dear, dear friend. Michael will never forget his and Jon’s many road trips together..... Northern Ontario, their “ trucker” breakfasts, and even the occasional rum and Fresca! No doubt there was a welcoming committee of Lord Alfred, Gord and many others. RIP Jon. We will miss you. Xo
Deepest condolences to all the Tondeur family.
So very sorry for your family loss; our condolences and sympathy.
Dear Michelle and family - very sorry to hear of your father's passing. Thinking of you.
Our hearts are broken to learn of the passing of our dear friend Jon. A nicer person you'd be hard to find. Thelma, we send our love to you and your family and hope you will find comfort in knowing how loved and respected Jon was. John and I will treasure the memory and pictures from your last visit to us. Thanks to your daughter for making that visit possible. God bless you and your family. John & Vivian
Sincere sympathy in your loss of John . I met John during my time as Deputy Reeve on the Haldimand Township council . Sorry to hear of his passing.
Dear Lisa, Thelma and the Tondeur family. We are sending our love and prayers to all of you at this difficult. We are so sorry to hear of Jon’s passing.
A Memorial Donation has been made to the following charity:
Canadian Cancer Society
So sorry for your loss. Sending all my love to the entire family.
Dear Thelma and family,please accept my sincere condolences on the passing of Jon .My sympathy goes out to your family at this time of great loss
Dear Thelma and Tondeur family; We are so saddened to hear of Jon’s passing. Your marriage of so many years, and the beautiful family that you have created are a testament to the incredible legacy that he leaves with you, and with the world.
A Memorial Donation has been made to the following charity:
Canadian Cancer Society
Dear Michelle and family, I am sorry to hear of your dads passing. Please accept my sincere condolences and hope all your great memories will comfort you at this time. My thoughts and prayers are with you. Sincerely Elaine
A Memorial Donation has been made to the following charity:
Canadian Cancer Society
My sincere and heartfelt condolences to you, Thelma, and your family. I can vaguely understand the loss of your loved one after so many years together, as my parents went through the same long term relationship. We are so blessed with having memory so that our loved one really never dies but lives in spirit within us. Many blessings to you.
Sorry to hear of the passing of a good person. Our thoughts and prayers to your family. Brian and Lillian
My sincere sympathies to Thelma and family. We have a lost a real gentleman who was a joy to know. I am grateful for his long, warm friendship and am very saddened by his loss. May he Rest In Peace. Shirley
Dearest Thel and family, Our friendship dates back many, many years and our memories are many. Please know that you are all in our thoughts and prayers at this difficult time. May God bless you!
Thelma to you and family our deepest condolences to you and family. Jon was a great friend and a huge supporter that I will never forget. RIP Jon. Lou and Diane
We are so very saddened to hear of Jon's passing. Our sincere condolences to Thelma and family. You are in our thoughts and prayers.
Dear Thelma and Family, We are saddened to hear of Jon’s passing. He helped make Cobourg a better place to live and work. He loved his family and you. Blessings and hugs.
I am so sorry for your loss. I will always remember how kind John was to me when ever I had the pleasure to cross paths. He will be missed by everyone. Sincerely John Marchand and Family
To Thelma and all of the family. Jack and I are so very sorry for your loss. We were so pleased to be your friends and neighbours for many years. I first met Jon when I was hired as a young waste management engineer with the County of Northumberland. He tried to teach me about pavement and road drainage, but what I learned most from Jon was how to support the people that you work with and how to interact with the residents that you serve. He was larger than life, and will be missed! xoxo
We are both so terribly sorry to hear of Jon’s passing. Our deepest condolences to you and your family
A Memorial Donation has been made to the following charity:
Canadian Cancer Society
I am so very sorry to hear of John's passing. He was a kind and caring man and I always loved our chats while cutting his hair. Sincere condolences to Thelma and the family.
Thelma and Family, we are so sorry to read of Jon's passing. Our sincere sympathy, condolences, and kind thoughts.
Thelma I am sorry for your loss, John worked with me at many meetings and I will always remember him as a very respectable gentleman. my condolences go out to your family.
A Memorial Donation has been made to the following charity:
Canadian Cancer Society
My name is Ella and I was one the employees working at Foodland the evening when your husband passed away. I just want to send my condolences and will be making a donation to the Canadian Cancer Society on his behalf. I hope you and your family are holding up ok. Ella Watson
Dear Thelma and family. With my sincere sympathy on your loss of John. May he Rest In Peace.
We are so sorry for your loss! We remember when you moved to Cobourg as our neighbour. Jon was so hard working and enjoyed his family so much. Our thoughts are with you all during this difficult time.
Dear Thelma We send our heartfelt condolences to you and your family. Jon was a great community person and we had several opportunities to work with him on many projects. We will miss him Sincerely Tony and Carol
I am so sorry for your loss. I have thought of him often. Hugs to Thelma. Rest In Peace Jonathan
Lori and I send our heartfelt condolences to you Thelma and your family. John will be remembered as one who worked diligently to help make our community a better place, always friendly, helpful and polite. We will miss him very much. Lori and Bill Wensley.
Please accept our most deepest sympathy.
I worked with John at the County for many years .He was a man of honour and extremely respected by all his peers . You have my sorrows.