Burial will be at North Lawn Memorial Park in Spencer.
He was born on Friday, July 13, 1923, to George and Charlotte (Hronek) Nieman in Pocahontas. Clayton moved to Spencer with his family in 1939. He graduated from Spencer High School in 1942. After graduation, Clayton worked as an aircraft mechanic for Hunter's flying Service in Spencer until he enlisted in the U.S. Army Air Corp. in 1944. After extensive schooling he became a flight engineer on B-24 and B-29 aircraft. While stationed in Pueblo, Co, he met and married Jean Allen. The Niemans celebrated their 62nd anniversary last May.
Upon their return to Spencer after the war, Clayton joined his father as the Standard Oil bulk agent. Later he joined People's Natural Gas as a service technician where he remained for seven years until he opened his own sewing machine sales and service center to compliment Jean's fabric business. Clayton also served as a volunteer fireman at the Spencer Fire Department for many years. Clayton and Jean combined their businesses when they opened Nieman's Sewing Center which they operated together until their retirement.
Since retirement, Clayton and Jean traveled extensively in their RV and spent time in Mesa, Ariz., where they have owned a winter home for the past 15 years. Summers were spent visiting family and friends.
Clayton was preceded in death by his parents, George and Charlotte, his brother George Jr., and nephew Bruce Nieman, grandson Greg Nieman and granddaughter Keshia Anderson. He is survived by his wife Jean, daughters Jane (Jim) Geving, Madison, Wis., Jennifer (Greg) Maharry, Webster City, Joni (Brent) Culver, Cedar Rapids, sons Jim, Fairmont Minn., Mark, Le Mars, Joe (Sharon) Le Mars, 17 grandchildren and 7 great grandchildren.