William Vernon Prestwich

Dr. William (Bill) Vernon Prestwich, affectionately called “Professor” by the caring staff at Birch Trail in St. Joseph’s Villa, passed away on November 12, 2025, at the age of 87. A beloved educator, scientist, and father, Bill was born in Toronto on April 21, 1938. He dedicated his life to the pursuit and sharing of knowledge, touching the lives of students, colleagues, and loved ones alike.

As a professor of physics for nearly four decades, Bill inspired generations of students to explore the world of radiation physics and its vital applications in health and medicine. He earned his PhD in Nuclear Physics from McMaster University in 1963 and was a pioneering researcher in radiative transport, dosimetry, and microdosimetry. His collaborative work with the Hamilton Regional Cancer Centre contributed significantly to advancements in medical physics. Bill held the title of Professor Emeritus of Interdisciplinary Science and Radiation Sciences, reflecting his lasting influence and dedication to his field.

Beyond academia, Bill enjoyed tending his garden, loving animals, and taking long walks with his dogs, which brought him peace and joy throughout his life. His warmth, curiosity, and mentorship left an indelible mark on all who knew him.

Bill was predeceased by his wife, Jacqueline. He is survived by his children, John (Jennifer), Debbie (Blair), and Tim; his eight grandchildren; and three great-grandchildren.

The family wishes to express heartfelt gratitude to Susan and Peter Robinson-Gray for their unwavering love and support over the years. We also extend our deepest thanks to Dr. James Williams and the compassionate staff at Birch Trail in St. Joseph’s Villa for their loving care and dedication.

Bill’s legacy endures through his contributions to science, his kindness to those around him, and the countless lives he touched. He will be deeply missed but forever remembered with affection.

Cremation has taken place. In memory of Bill, donations to The Bill Prestwich Scholarship in Medical Physics would be sincerely appreciated - https://alumni.mcmaster.ca/TheBillPrestwichScholarship