Rhoda Clark was the fourth child of Timothy Baldwin Clark and Mary (Polly) Keeler. She was born on 25 October 1809 in Trumbull County, Ohio. She married John Andrew Cooper on 22 January 1828. She had two children and was living near her father in Peoria when the Black Hawk War broke out in 1832. Her husband was a sergeant in Captain Holder Sisson's Company during the war.
In 1841 or 42 Rhoda and her husband, John moved to Iowa and settled in Lee County. Later they returned to Illinois for a short time and then returned to Iowa and located in Mahaska county. In 1850 her eldest son, Lewis and husband spent a year in California searching for gold. Her husband returned because of poor health and her son stayed longer. In 1854 Rhoda and her husband moved to Amado County, California and then to Sonoma County and settled in Santa Rosa. Rhoda had belonged to The Church of Jesus Christ of Latter-Day Saints but later she and her family joined the Reorganized Church of Jesus Christ of Latter-Day Saints. Rhoda died at her daughter, Mary Lousia Douglass's home, 21 March 1899 in Hopland, Mendocino, California. She is buried in Rural Cemetery Santa Rosa, California. Rhoda was the mother of eight children.