Sylvan Lee McWilliams of Pittsburg, Kansas passed away June 8, 2026, peacefully at Comfort Care in Pittsburg with his wife of 34 years, Cynthia Triplett, by his side. Sylvan was born March 30, 1943, in Pittsburg, Kansas as the only son of Glenn Howard and Vivian Irene (Owens) McWilliams and was known throughout his adult life to friends and family as Mac.