Age 68, passed away Tuesday morning, June 7, 2022. Mark was born in Columbia, SC, on December 20, 1953, the son of Jack Stuart and Nancy Ann (Mowbray) Duncan. On June 28, 1975, he married Patricia Reist who survives him. Mark enjoyed fishing with friends. He also enjoyed travelling and playing the lottery. He was an avid member of Bronson Athletic Club. He worked for many years at Mastercraft Corporation, and later owned a cleaning company with his mother-in-law, Jutta Reist. He also worked at Borgess Hospital in environmental services. Besides his wife, Mark is survived by his brother Gregory (Vicky) Duncan of Kalamazoo; sister-in-law, Kim Duncan; nieces and nephew, Randy Duncan, Amber Duncan, Emily Duncan, Angela Duncan; several great-nieces and great-nephews; and countless friends. He was preceded in death by his parents; and a brother, Gary Duncan.