Passed away peacefully at Chippawa Creek at Bella Care Residence on Saturday, June 8, 2024 in his 90th year. Predeceased by his beloved wife Lilyan (2019). Loving father of LeeAnn Milliken (Doug MacNaughton) and John Milliken (Ingrid). Cherished grandfather of Alex, Jamie, Hannah and Evan. Predeceased by his brother Jim. Jack was a professor at the University of Guelph and the University of Michigan where he taught landscape architecture. He enjoyed golfing, playing the harmonica and had a passion for woodworking. Jack took much pride in designing and building his own house along the Eramosa River in Guelph. In keeping with John's wishes cremation has taken place. As an expression of sympathy donations made be made to the Canadian Cancer Society. Condolences may be shared at www.pelhamfuneralhome.ca