Cathryn was born on October 22, 1919, near Carnsforth, Iowa, to H.M. and Alma Benton Gwin. She was raised in Grinnell and attended Cooper and Davis Schools before graduating from Grinnell High School with the Class of 1937. She was married to Donald R. Souter on July 26, 1937, at Ewart, Iowa. The couple lived in Grinnell and she was a mother and homemaker. Cathryn was a member of the United Church of Christ-Congregational and served as a Sunday school teacher, assisted with wedding receptions and was past president of the women's federation of the church. She was also a Cub Scout den mother and enjoyed family functions, cooking, canning, needle work, gardening and fishing. Survivors include her husband, Donald Souter of Iowa City; one son, Roger Souter of Iowa City; two daughters, Sandra Ross of Marion, VA and Linda Shope of Iowa City; and two sisters, Lillian Rasmussen of Bellevue, Nebraska and Shirley Monsma of Altoona; five grandchildren; four great grandchildren; and three great great grandchildren. She was preceded in death by her parents; three sisters, Pauline Graham, Lucille Lockhart and Harriet Braley; and her brother, Harry Gwin Jr. Memorials may be directed to the United Church of Christ - Congregational. The family will be present at the church one hour prior to the service.