Greenwold, also known as the Manlove Hayes House, was a historic home formerly located in Dover, Kent County, Delaware.

It was built in 1863, and consisted of a 2+1⁄2-story center hall plan main house with a rear service wing.

[3] Sarah continued to live in the house, and submitted a successful application to have it added to the National Register of Historic Places in 1973.

[3][1] She sold the home to Bayhealth in 1982, and it was used by the health system for office until about 2011, when heating and cooling costs became prohibitive.

[3] In 2020, Bayhealth proposed the demolition of Greenwold and neighboring properties for the construction of a staff parking lot.