Dr. Clive Lewis Greenstock

Dr. Clive Lewis Greenstock

Monday, August 14th, 1939 - Sunday, July 12th, 2020
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Dr. Clive Lewis Greenstock
August 14, 1939 – July 12, 2020
It is with great sadness that we announce Clive’s passing after a long struggle with many health issues following five devastating hemorrhagic strokes.
He will be forever loved, remembered and missed by his wife of 55 years, Gwen, his daughters and sons-in-law, Erica and Glenn Charette and Andrea and Tom Patrick and his granddaughters Keely and Kiana Patrick. He will also be missed by Gwen’s sisters and brothers- in-law, Claire and Peter Shragge and Marilyn and Harold Duplacey and their families, as well as relatives in the US and South Wales. He was predeceased by his parents Clarice and George Greenstock.
An only child, Clive was born and raised in England on the outskirts of London where his father was a police officer. He excelled in school and obtained a BSc in Physics at Leeds University and an MSc in Medical Physics at the University of London. He came to Canada to do a PhD in Medical Biophysics at the University of Toronto in 1964. He met and married Gwen in 1965 and they had an amazing life together, living in many places and traveling all over the world. Clive was a research scientist at Atomic Energy of Canada Ltd. (AECL), first for 18 years in Pinawa, Manitoba and then for 17 years in Chalk River, Ontario. He and Gwen lived in England on two occasions – in London for two years right after his PhD on a post-doctoral fellowship and a year’s sabbatical in Manchester when Andrea and Erica were in Grades 4 and 6. That year was a fantastic experience for the whole family. Clive retired in 2005 and enjoyed good health and nine great years of retirement before his first stroke in 2014. He and Gwen traveled widely with their Fifth Avenue Collection business, as well as for pleasure and spent their summers at their cottage on Round Lake, surrounded by family and friends. Even after his first stroke, life for Clive was pretty good and he and Gwen were able to live a somewhat normal life, including trips to China, India, Europe and the Panama Canal, until 2018 when four more strokes changed his life forever. These past two years have been very difficult, but Clive bore it all with tremendous strength and courage, tried as hard as he could to recover, and was loved by everyone who knew and cared for him.
In addition to his work, Clive absolutely adored his daughters and granddaughters and liked nothing more than playing with them for hours on end, building play structures, forts, snowmen, teaching them all kinds of sports and life skills and helping them understand the world of science around them. In addition to his family, his next love was a toss-up between sports of all kinds and cars of all kinds – and the sportier, the better. He loved to travel the world, for his scientific work and for the pleasure of exploring cultures unlike his own.
The family wish to thank Dr. Bruce Strader, Jean Benton NP, Christine Rossi RN and the nursing staff of 2C at Marianhill for their excellent care of Clive and especially for such love and compassion shown to both Clive and Gwen in his final days. We are also indebted to Mark Peever PT, and his staff from House Calls Physiotherapy, and Dr. Debbie Timpson and her staff at the Rehabilitation Unit of the Pembroke Regional Hospital for their kind and compassionate care of Clive over the years. We are very grateful to all of our friends and relatives, who visited Clive in hospital and at Marianhill and lent their support to all of us, especially during these past two years.
In remembrance of Clive, please consider a donation to the Pembroke Regional Hospital Foundation or a charity of your choice.
As per Clive’s wishes, cremation has taken place. Due to the constraints of covid-19, a private family graveside service will take place. Arrangements by the
Neville Funeral Home
491 Isabella St., Pembroke, ON, K8A 5T8
(613) 732-7481
Online Condolences may be left at
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Edouard Azzam

Posted at 02:45pm
Dear Gwen, Erica and Andrea & families:
It is with great sadness that I learnt of Clive’s passing upon visiting Deep River yesterday. May he rest in peace! I will keep the fondest memories of the time we spent together in Pinawa and in Chalk River. Clive was a wonderful scientist, but above all, he was a gentleman who taught me and so many others a lot about science and the world. He was a model Teacher who approached scientific and human questions with insight and open mind. My thoughts are with you, and Clive will be in my prayers always! We are grateful for the memories!

Gwen Greenstock Posted at 12:17pm

Thank you so much for reaching out to me, Edouard. Clive was everything you said he was and more. The world has lost an amazing man. I would love to have seen you when you were in Deep River. Please don't pass by this way again without contacting me and stopping by for a visit.

Diane Laidman

Posted at 10:29am
Gwen and family, I was truly sorry to learn that Clive had passed away. I always enjoyed talking and joking with him whenever he accompanied you to my home during a Fifth Avenue show and when I visited with you at one of your open houses. He had such a dry sense of humour that usually kept me on my toes in order to keep up with him. Again, my sincerest condolences for your loss!

Gwen Greenstock Posted at 02:00pm

Thank you so much for your kind comments, Diane. He always enjoyed visiting with you Diane. He will be missed but never forgotten.

Colleen Hobbs

Posted at 07:59am
Our deepest sympathies to Gwen and family. We met through a small business network group and I became involved with Fifth Avenue Jewellery as a result. There are awesome memories of a trip to Toronto and a day at their cottage. Clive was such a gentle, carefree soul. My thoughts are with you all!

Gwen Greenstock Posted at 02:02pm

Thank you so much Colleen. Yes, we have wonderful memories with you at various events, whether BNI or Fifth Avenue. Clive was a very gentle soul and will be sorely missed.

Trudy and Jeff

Posted at 09:50pm
In memory of a wonderful father and husband. May his memory live on.
Tree Image
A memorial tree was planted in the memory of Dr. Clive Lewis Greenstock — Plant a Tree Now

Gwen Greenstock Posted at 02:05pm

Thank you so much. What a lovely idea. Clive loved trees - not so much flowers as he couldn't keep them alive, but he would never cut a tree down unless it was a danger to his family. So a very fitting memorial.

Trudy Driscoll

Posted at 09:43pm
Andrea, Tom, Gwen, Erica, and Glenn, and girls

I am so very sorry for your loss. It is very hard to lose someone who has been an anchor for the family. The tribute video was such a wonderful recounting of the love your family has shared. No words can ease the pain of your loss but please find strength in all the love and prayers being sent your way. In my thoughts and prayers.
Trudy and Jeff

Gwen Greenstock Posted at 02:04pm

Thank you so much Trudy and Jeff. Andrea was so touched with your post. We have wonderful memories to carry us through the difficult sad moments. We definitely do find strength in all the love and prayers being sent our way.

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