Magnolia Mound Plantation House
A historic French Creole plantation house and museum near downtown Baton Rouge, Louisiana.
Last updated October 14, 2026
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Overview
Magnolia Mound Plantation House is a historic French Creole house and heritage site in Baton Rouge, Louisiana, approximately one mile south of the modern downtown area and near the Mississippi River. The surviving house began as a four-room cottage constructed in 1791, making it one of the earliest buildings in present-day Baton Rouge. The property was also known in period records as Mount Magnolia. Its architecture reflects the vernacular traditions brought to Louisiana by settlers from France and the West Indies, including a broad hipped roof, galleries, high ceilings, and a plan adapted over time to the region's climate and social conditions. The first documented owner was James Hillin, an early Scots settler who arrived in the area in 1786. On December 23, 1791, John Joyce, an Irish immigrant from County Cork, purchased the approximately 950-acre property. Joyce and his wife, Constance Rochon, lived in Mobile, Alabama, while the plantation was operated in Louisiana. At the time of Joyce's death by drowning in 1798, the plantation was worked by enslaved people and produced indigo, tobacco, cotton, and sugarcane under an overseer. After Joyce's death, Constance Rochon Joyce married Armand Duplantier, a prominent planter and former Continental Army captain who had served under the Marquis de Lafayette. The couple enlarged the house and used it primarily as a country residence. The first major expansion took place in the early nineteenth century, generally associated with the period from 1802 to 1805 and an architectural development around 1812. The original cottage grew into a seven- or eight-room dwelling with a formal dining room, service rooms, and a U-shaped gallery. Later owners added rooms beneath portions of the gallery, while the interior was altered again in the early twentieth century. These changes created a layered building in which the original cottage, nineteenth-century additions, and later modifications remain part of the site's interpretation. Duplantier descendants retained the plantation until 1849. The property then passed through several owners, including Louis Barillier and Robert A. Hart. Edward J. Gay acquired the deed in the early 1860s and employed overseers to manage the plantation, including W. L. Larimore in 1869. After the Civil War and the decline of plantation agriculture, the property continued through private ownership. Blanche Duncan later acquired Magnolia Mound through family inheritance and commissioned extensive alterations and additions from the Baton Rouge architectural firm Goodman and Miller in 1951. By the 1960s the property had deteriorated. In 1966, the City of Baton Rouge used eminent domain to acquire the house, sixteen acres, and associated dependencies in order to preserve their historic and architectural significance. The city subsequently maintained the property as public green space and a historic interpretation site. Magnolia Mound was listed on the National Register of Historic Places on September 7, 1972. BREC maintains and operates the site for public visitation and educational programming. The complex includes the main house and several structures that explain both domestic life and plantation operations. A circa-1830 double slave cabin, moved from Pointe Coupee Parish and installed in 1998, presents both a furnished interpretation of enslaved life and an exhibit on slavery in Louisiana. A reconstructed open-hearth kitchen is based on archaeological evidence and contains period cooking equipment. Other features include an original overseer's house dating to approximately 1870, a crop garden representing indigo, tobacco, cotton, and sugarcane, a circa-1825 French Creole pigeonnier, and a carriage house with tools and a weaving workshop. Together, these resources present Magnolia Mound not as a commercial brand but as a publicly preserved historic property whose identity is grounded in architecture, local history, plantation agriculture, and the lives of the enslaved and free people connected with it.
History
Magnolia Mound began as a four-room cottage built in 1791 on land associated with James Hillin, an early Scots settler in the Baton Rouge area. John Joyce purchased the roughly 950-acre property on December 23, 1791. Joyce and Constance Rochon lived in Mobile while the Louisiana plantation produced indigo, tobacco, cotton, and sugarcane through the labor of enslaved Africans supervised by an overseer. Joyce died in a boating accident in 1798, after which his widow married Armand Duplantier, a planter and former Continental Army captain who had served under Lafayette. The Duplantier family expanded the residence in the early nineteenth century. The cottage developed into a larger country house with additional rooms, a formal dining room, service spaces, and a U-shaped gallery. Architectural changes continued later in the nineteenth century, when rooms were built beneath parts of the gallery. The resulting rectangular structure, covered by a large hipped roof, combines early Louisiana cottage traditions with later adaptations. Double-hung windows were added during the early nineteenth century, and the interior was modified during the twentieth century. Duplantier descendants owned the plantation until 1849. During the remainder of the nineteenth century it passed among several owners. Edward J. Gay acquired the deed in the early 1860s and managed the agricultural property through overseers, including W. L. Larimore in 1869. The plantation's history therefore includes both the economic development of southern Louisiana and the coercive labor system on which its agricultural production depended. In the twentieth century, Blanche Duncan obtained the property through inheritance. She hired Goodman and Miller of Baton Rouge to carry out extensive alterations and additions in 1951. The house later deteriorated, prompting the City of Baton Rouge to acquire the main house, dependencies, and sixteen acres through eminent domain in 1966. The acquisition converted the property from a private residence and declining plantation holding into a publicly protected historic resource. Magnolia Mound was placed on the National Register of Historic Places on September 7, 1972. The city and BREC have since maintained the house and grounds as an interpretive site. Preservation and interpretation expanded beyond the main residence. In 1998, an original double slave cabin dating to approximately 1830 was relocated from Pointe Coupee Parish. One side was furnished to convey early nineteenth-century living conditions, while the other became an exhibit addressing the lives of enslaved people in Louisiana. A reconstructed outdoor kitchen, an original circa-1870 overseer's house, a crop garden, a circa-1825 pigeonnier, and a carriage house with tools and weaving equipment further illustrate the site's domestic, agricultural, and labor history.
- 1998
Slave cabin installed for interpretation
[1]An original double slave cabin from Pointe Coupee Parish was installed on the grounds, with spaces devoted to furnished interpretation and an exhibit on enslaved life.
- 1972
National Register listing
[1]Magnolia Mound Plantation House was listed on the National Register of Historic Places on September 7.
- 1966
Acquired for preservation
[1]The City of Baton Rouge used eminent domain to acquire the house, dependencies, and sixteen acres for preservation.
- 1951
Twentieth-century alterations
[1]Blanche Duncan commissioned Goodman and Miller of Baton Rouge to undertake extensive alterations and additions.
- 1849
Duplantier ownership ended
[1]The plantation left Duplantier family ownership and subsequently passed through multiple private owners.
- 1812
Major architectural expansion
[1]The cottage had developed into a larger seven- or eight-room house with service spaces and a U-shaped gallery.
- 1802
Duplantier-era expansion began
[1]Constance Rochon Joyce and Armand Duplantier enlarged the house to accommodate their family and used it largely as a country residence.
- 1791
House constructed
[1]Magnolia Mound began as a four-room French Creole cottage near the Mississippi River in what is now Baton Rouge.
- 1791
John Joyce acquired the plantation
[1]John Joyce purchased the approximately 950-acre property on December 23, 1791.
Products and positioning
A publicly preserved Baton Rouge heritage site focused on French Creole architecture, plantation history, slavery interpretation, and the evolution of an early Louisiana residence.
Historic architecture · 1791
Magnolia Mound main house
The principal attraction is a French Creole residence that evolved from a four-room 1791 cottage into a larger country house. Its features include a rectangular plan, broad hipped roof, galleries, later double-hung windows, formal and service rooms, and layers of nineteenth- and twentieth-century alteration. The house is interpreted as an architectural record of early Baton Rouge and changing plantation society.
Historic outbuilding and exhibit · 1998
Double slave cabin
This original circa-1830 double cabin was relocated from Pointe Coupee Parish and placed at Magnolia Mound in 1998. One half is furnished to communicate aspects of early nineteenth-century living conditions; the other presents an exhibit about enslaved people and slavery in Louisiana.
Reconstructed historic outbuilding
Open-hearth kitchen
The separate kitchen was reconstructed using archaeological evidence. Its interpretation includes period cooking implements and furnishings, demonstrating how food preparation was separated from the main residence and how plantation kitchens operated.
Historic outbuilding · 1870
Overseer's house
The overseer's house, dating to approximately 1870, is an original plantation dependency. It helps explain the management structure of the agricultural property and is separately recognized in connection with the Magnolia Mound Plantation House Dependency.
Historic outbuilding · 1825
Pigeonnier
The circa-1825 pigeonnier is a small French Creole dovecote traditionally used for pigeons and game birds. The structure is separately recognized as the Barthel Pigeonnier and continues to support a live pigeon collection.
Living-history landscape
Crop garden
The crop garden represents the agricultural products associated with the plantation over time, including indigo, tobacco, cotton, and sugarcane. It connects the historic landscape to the labor systems and commercial crops that shaped Louisiana plantation operations.
Historic outbuilding and craft exhibit
Carriage house
The carriage house contains vintage tools and a weaver's workshop. Its interpretation focuses on transportation, maintenance, and household or plantation crafts associated with the period around 1800 to 1820.
Brand decisions
1998
Expanded slavery interpretationOtherBackground
Interpretation of the site required attention not only to the owners and architecture but also to the lives and working conditions of enslaved people connected with the plantation.
Action taken
The city installed an original double slave cabin from Pointe Coupee Parish and assigned separate spaces to furnished interpretation and an exhibit on enslaved life in Louisiana.
Aftermath
The grounds gained a dedicated material resource for discussing enslavement, domestic conditions, and the labor history of the plantation.
1966
Municipal preservation acquisitionStrategyBackground
The privately held property had fallen into disrepair, placing the house and its dependencies at risk of loss.
Action taken
The City of Baton Rouge exercised eminent domain to acquire the house, associated dependencies, and sixteen acres for preservation and public use.
Aftermath
The property became a publicly maintained historic site and green space, later operated and interpreted through BREC.
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