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St. Louis Plantation

A historic Southern plantation and mansion in Iberville Parish, Louisiana.

Last updated August 26, 2026

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Overview

St. Louis Plantation is a historic plantation property in Iberville Parish, Louisiana, United States. Its principal surviving feature is a two-story frame mansion associated with the plantation landscape and listed on the National Register of Historic Places. The present house was built in 1858 as a replacement for an earlier residence known as Erwin's Castle. That earlier house had been constructed at the same location in 1808 and was destroyed by flooding in the early 1850s. The replacement mansion reflects architectural influences associated with the Greek Revival and Italianate styles. It is a clapboard-covered frame structure set over a brick basement. The property is also associated with Edward J. Gay, who later owned the plantation and served as a member of the United States Congress. St. Louis Plantation is documented primarily as a historic architectural and cultural site rather than as a contemporary commercial brand, product company, or operating consumer business. Its significance in the available reference material rests on the continuity of the site, the replacement of the earlier residence after the flood, the character of the surviving nineteenth-century house, and its formal recognition through National Register listing on December 3, 1975.

History

The documented history of St. Louis Plantation centers on a succession of residences at the same Louisiana site. An earlier house called Erwin's Castle was built there in 1808. That building was destroyed by a flood in the early 1850s, prompting the construction of a replacement residence. The surviving mansion was completed in 1858. It is a two-story frame cottage covered with clapboards and raised over a brick basement. Its design combines features associated with Greek Revival and Italianate architecture, placing it within the architectural traditions common to significant nineteenth-century Southern houses. The plantation was later owned by Edward J. Gay, a member of Congress. The available references do not provide a complete ownership chronology, detailed information about the plantation's agricultural operations, or a full account of the people who lived and worked there. They do establish the site's physical continuity and the important transition from the flood-damaged early house to the present nineteenth-century mansion. St. Louis Plantation received formal historic recognition when it was added to the National Register of Historic Places on December 3, 1975. In the available material, the property is treated as a historic plantation and architectural resource in Iberville Parish rather than as an active brand or commercial enterprise.

  • 1975

    Listed on the National Register of Historic Places

    [1]

    St. Louis Plantation was added to the National Register of Historic Places on December 3, 1975.

  • 1858

    Present mansion built

    [1]

    The surviving two-story frame mansion was built as the replacement for the earlier flood-damaged residence.

  • 1808

    Erwin's Castle constructed

    [1]

    An earlier residence known as Erwin's Castle was built at the site of the later St. Louis Plantation mansion.

  • Earlier residence destroyed by flooding

    [1]

    Erwin's Castle was destroyed by a flood, leading to the construction of a replacement house at the same location.

  • Ownership associated with Edward J. Gay

    [1]

    The plantation was later owned by Edward J. Gay, who was a member of Congress.

Products and positioning

A historic Louisiana plantation property and architectural landmark, not a contemporary commercial brand.

Sources1 sources

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