Ivan Robert Chittenden, of Toronto, Canada, and Frisco, Texas, passed away tragically on Sunday, August 20, 2023, in Cork, Ireland, whilst participating in a triathlon event there. Ivan was born in Brantford, Ontario, on October 6, 1958, to Edna and Robert Chittenden. Ivan was predeceased by his parents; and by his first wife, Dianne Dyer; as well as by his nephew, Craig Chittenden. Ivan leaves behind to mourn him his beloved wife, Dr. Siobhan Hyland; and his dear stepchildren, Jack and Kate; his brother, Roger (Candy); mother-in-law, Patricia Hyland; sisters-in-law, Debra Latcham and Dr. Jacqueline Hyland (Tim Hindman); and brother-in-law, Terry Hyland ( Kristyn ); as well as by nieces, nephews, and grand-nephew in Canada and the US. After graduating high school, Ivan went on to study business at Wilfrid Laurier University. Just out of school, he joined Ernst & Young in Toronto, where he spent a long and notable career that spanned six decades. Ivan was both a professional practice partner and audit partner for the firm, serving as the global coordinating partner for many of EY Canada's largest global accounts. Ivan retired from EY in 2021, but continued his work as a consultant with the firm. A long-time runner, Ivan became an endurance athlete in his early 50s. He competed in ironman races across the globe, from Canada to Zell am See, Austria, and completed all six of the World Marathon Majors - Berlin, Boston, Chicago, London, New York City and Tokyo. He was also a long-time member of the Toronto Athletic Club and the Weston Golf & Country Club. In 2012 he met his cherished, Siobhan, and began a romance for the ages. The two shared a love that was apparent to all. Ivan was a devoted stepfather who treasured his stepchildren, Jack and Kate, and the time he spent with them. His love for life and ability, always, to see the positive, was a joy and inspiration to everyone he encountered. Ivan was a consummate professional, a wonderful friend, and encouraging mentor to all who knew him. Although we are heartbroken, we take comfort from knowing how much he enriched our lives. His legacy of love and kindness will endure. A celebration of Ivan's life will be scheduled in the upcoming days with details to follow. Remembrances, if desired, may be directed to the National Ballet of Canada, where Ivan and Siobhan enjoyed so many performances over the years. 'What do we do when our hearts hurt?"'asked the boy. 'We wrap them with friendship, shared tears and time, till they wake hopeful and happy again.' Charlie Mackesy, The Boy, the Mole, the Fox and the Horse