Otway Henderson House  Otway Henderson House is a historic home located at McCormick in McCormick County, South Carolina. It was built around 1889 and is a 1 1/2-story home. Its frame is Second Empire style. It features a dual-pitched mansard roof and a one-story porch with rectangular posts and railing. It was built by Otway Henderson, a prominent cotton farmer of the county. It was listed on the National Register of Historic Places in 1985.