{{short description|Historic house in Connecticut, United States}} {{Use American English|date=July 2025}} {{Use mdy dates|date=March 2025}} {{Infobox NRHP | name = Osborne Homestead Museum | nrhp_type = | image = Derby Osbornedale house.jpg | caption = Osborne Homestead Museum in 2008 | location = 500 Hawthorne Avenue, Derby, Connecticut | coordinates = {{coord|41|20|3.4|N|73|6|40.5|W|display=inline,title}} | locmapin = Connecticut#USA | built = 1840 | architect = Waldo Kellogg | architecture = Greek Revival, Tudor Revival | added = June 13, 1986 | area = {{convert|8|acre}} | website = [https://portal.ct.gov/deep/education/kellogg/osborne-homestead-museum Osborne Homestead Museum] | refnum = 86001256<ref name="nris">{{NRISref|2009a}}</ref> }}
'''The Osborne Homestead''' is a two-story Colonial Revival house located in Osbornedale State Park, in the Derby Neck section of the city of Derby, Connecticut. The homestead is listed on the National Register of Historic Places and is operated as a museum by the State of Connecticut. It is significant for being the home of Frances Osborne Kellogg, a proponent for equal professional opportunities for women in Connecticut.
==History== The house was originally built as a farmhouse in 1840 in the Greek Revival style. Little is known about the first occupants. In 1867, Wilbur Osborne, who owned and ran several industries in Derby, Ansonia and Bridgeport, and his wife, Ellen Lucy Davis, moved to the house. The couple ran a dairy farm in the surrounding land. Their sole surviving daughter, Frances, took over after her father's death and became a prominent businesswoman – president of the Union Fabric Co., vice president of Connecticut Clasp, treasurer of the F. Kelly Company, and a founding partner of Steels and Busks, Ltd. Of Leicester, England. She married Waldo Stewart Kellogg in 1919, and he took charge of the dairy, using selective breeding to make the herd "famous throughout New England for quality milk production."<ref>[http://electronicvalley.org/tour/Osborne.htm] "Osborne Homestead Museum" Web page on the Electronic Valley Web site, accessed on July 22, 2006.</ref> Waldo Kellogg enlarged and remodeled the house to its current form between 1919 and 1925.
Waldo Kellogg died in 1928 but Frances stayed in the house until her death in 1956. Just before she died, she deeded her entire {{convert|350|acre|ha|adj=on}} estate, including Osbornedale, to the State of Connecticut.
The state now operates the house and grounds as the Osborne Homestead Museum; the surrounding land comprises Osbornedale State Park.
The house was added to the National Register of Historic Places on June 13, 1986.<ref name="nris"/>
==See also== *National Register of Historic Places listings in New Haven County, Connecticut
==References== {{reflist}}
==External links== *[https://portal.ct.gov/deep/education/kellogg/osborne-homestead-museum Osborne Homestead Museum] - CT DEEP *[https://ctparks.com/parks/osbornedale-state-park Osbornedale State Park] - CT DEEP
{{NRHP in New Haven County, Connecticut}}
Category:Buildings and structures in Derby, Connecticut Category:Houses on the National Register of Historic Places in Connecticut Category:Houses completed in 1840 Category:Houses in New Haven County, Connecticut Category:Museums in New Haven County, Connecticut Category:Biographical museums in Connecticut Category:Historic house museums in Connecticut Category:National Register of Historic Places in New Haven County, Connecticut