Place:Ringwood, Clinton, Iowa, United States

"Ringwood was until recently the name of a proposed town and corporation lying between and adjoining Clinton and Lyons, extending half a mile from north to south, and three-fourths mile west from the river, and comprising 260 acres." It was platted in 1856, with construction of housing beginning that year. It was incorporated in august 1873 to prevent being incorporated by the city of Clinton. Fourth Street in Clinton continues through Ringwood.
The History of Clinton County, Iowa. (1879)

Presumably it has since been incorporated by Clinton.