Mildred I. Duer, 100, of Ringsted, Iowa, died Saturday, July 23, 2022, at Valley Vue Care Center in Armstrong. Mildred Irene (Shultz) Duer, the daughter of Lee Edward and Esther Susan (Hyer) Shultz, was born June 3, 1922, on the family farm south of Gruver, IA. Mildred grew up working on the farm and assisting in raising her 3 younger sisters, Alice, Audrey and Evelyn. Millie attended Gruver Community School, Gruver, IA and Hamilton Business School, Mason City, IA. On June 22, 1946, she married her 4H sweetheart, Leonard Duer in a double wedding with her sister Alice and brother-in-law Art Adams. Len and Millie farmed northwest of Ringsted, IA for 38 years before building a home in Ringsted, IA. Millie was a member of United Lutheran Church, Ringsted, IA. She was a member of the Order of Eastern Star. Mildred is survived by her son Dennis Duer of Omaha, NE; Connie (Duer) Langhans and husband Paul of Omaha, NE; granddaughter Sara (Duer) DeVoto and husband Kevin of Kansas City, MO; great-granddaughters, Allison DeVoto and Joanna DeVoto of Kansas City, MO. Preceding Mildred in death were her husband, Leonard, her parents and her sisters, Alice Adams, Audrey Weitzel and Evelyn Simon.