Frogmore Plantation Complex

{{Use American English|date=January 2025}}

{{Use mdy dates|date=August 2023}}

{{Infobox NRHP

| name = Frogmore Plantation Complex

| nrhp_type = hd

| nocat = yes

| image = Barn, Frogmore Manor, Seaside Road, St. Helena Island (Beaufort, South Carolina).jpg

| caption = Tabby Barn

| location = Off Secondary Road 77 near its junction with Secondary Road 35, near Frogmore, South Carolina

| coordinates = {{coord|32|21|32|N|80|33|40|W|display=inline,title}}

| locmapin = South Carolina#USA

| built = 1920

| architecture = Central passage 4-over-4

| added = May 26, 1989

| area = {{convert|18.4|acre}}

| mpsub = {{NRHP url|id=64500565|title=Historic Resources of St. Helena Island c. 1740-c. 1935 MPS}}

| refnum = 88001754{{NRISref|version=2010a}}

}}

The Frogmore Plantation Complex, located on Saint Helena Island, in Beaufort County, South Carolina, is significant for several reasons.{{Cite web|url=http://www.nationalregister.sc.gov/beaufort/S10817707051/S10817707051.pdf|title=Frogmore Plantation Complex|last=Power|first=J. Tracy|author2=Sherry Piland|date=February 15, 1988|work=National Register of Historic Places - Nomination and Inventory|accessdate=7 December 2012}}{{Cite web | title = Frogmore Plantation Complex, Beaufort County (S.C. Rd. 77, St. Helena Island) Frogmore Plantation Complex, Beaufort County (S.C. Rd. 77, St. Helena Island) | work = National Register Properties in South Carolina | publisher = South Carolina Department of Archives and History | url = http://www.nationalregister.sc.gov/beaufort/S10817707051/index.htm | accessdate = 7 December 2012}} First, the plantation home, along with its contributing properties (i.e. pump house, barn, windmill/water tower), offers an excellent example of the area's architectural development from 1790 to 1920. Second, the plantation's long association with prominent families contributes to its significance. The plantation was first owned by Lieutenant Governor William Bull, who then willed it to his son in 1750.

After the Civil War, the house was purchased by two northern missionaries — Miss Laura Matilda Towne and Miss Ellen Murray — who founded the historic Penn School, located within the Penn Center. The Frogmore Plantation Complex was listed in the National Historic Register on May 26, 1989.