Age 77, passed away Thursday afternoon, June 28, 2018. Bob was born on July 28, 1940, in Stricklett, KY, to Samuel and Opal (McCleese) Duff. On September 1, 1962, he married Dixie Anderson who survives him. He proudly served his country as a member of the United States Air Force. Besides Dixie, he is survived by his daughter, Sheri (Steve) Gansen of Schoolcraft; his son, Bryan (Susan) Duff of Kalamazoo; his grandchildren, Stephen (Keisha) Gansen of Tulsa, OK, Matthew Gansen of Schoolcraft, Andrew, Austin and Allison Duff, all of Kalamazoo; a great-grandson, Behrett Gansen; sisters, Juanita (Larry) Sirls of Flatrock, MI, Irma Seitz of S. Rockwood, MI, and Linda Bonello of Newport, MI. He was preceded in death by his mother, Opal, father, Sam, brother, Michael and in-laws Leland and Elsie Anderson. A private family service is being planned. Memorial contributions may be made to the Alzheimer's Association, c/o the funeral home. Family and friends may share a condolence message online at www.joldersma-klein.com.