When the grant was sold and subdivided, this section was developed as an indigo plantation. In the early 1800s, Pierre Olivier Duclozel de Vezin, a wealthy Creole, acquired this property to raise cotton, cattle, and eventually, sugarcane. He built the Maison Olivier, the circa 1815 plantation house which is the central feature of Longfellow-Evangeline SHS. His son, Charles, made improvements to the home in the 1840s. The structure is an excellent example of a Raised Creole Cottage, a simple and distinctive architectural form which shows a mixture of Creole, Caribbean, and French influences.