Ethel Hermina (Mina) Rock was born September 10, 1937, Pierson, Iowa, the daughter of Herman C. and Ethel M. (Glover) Rock. She grew up in Pierson graduating from Pierson High School in 1955. After graduation from high school, she owned and operated Mina's Coffee Shop in Pierson for a period of time. She married William (Bill) Koch on November 23, 1957. After their marriage, Mina and Bill lived and raised their family in Pierson. Mina worked as a cook for the Kingsley-Pierson School and then the Senior Citizen Center both in Pierson, Iowa. Mina's husband, Bill, passed away in 2005 after which time she continued to live in Pierson until moving to Char-Mac Assisted Living in 2013.Mina was a lifetime member of the Pierson United Methodist Church; United Methodist Women, where she held various offices, along with several other local groups. She enjoyed flower gardening, playing cards, camping, traveling and helping Habitat for Humanity, where she and Bill traveled to various locations. Mina enjoyed spending time with her family and always looked forward to the next gathering.Survivors include one daughter, Kathy (Tim) Lewis of Climbing Hill, Iowa; two sons, Doug Koch of Pierson, Iowa and Steve (Wendy) Koch of Sutherland, Iowa, and one brother, Jim (Darla) Rock of Pierson, Iowa. Also, surviving are grandchildren, Adam Muecke (special friend, Hannah), Jake (Erin) Muecke, Cayla Koch, Shawna Koch (special friend, Alex) and Christian Koch and three great-grandchildren, Ethan, Kira and William Muecke.Preceding Mina in death, her husband, Bill; her parents, Herman and Ethel Rock; parents-in-law, Leonard and Esther Koch; sister, Venona; granddaughter, Kylie Koch and brother-in-law and his wife, Caroll Dean and Wanda Koch.