The plantation was established by Colonel Joseph Constance when he acquired several tracts of land at the location following the War of 1812.
 Pierre Auguste Samuel Fagot, usually known as Samuel Fagot, acquired the plantation and other St. James Parish properties beginning in 1829.
 A native of La Rochelle, France, he emigrated to the United States and was living in the vicinity of Convent by 1828.
 He married Emilie Jourdain and had two daughters, Marie Emilie Eugenie and Felicie.
 Marie Emilie Eugenie married Jacques Auguste Demophon Tureaud and Felicie married Lucien Malus.

By the time of Samuel Fagot's death in 1858, he was one of the largest landowners in St. James Parish.
 The plantation went to his widow after his death, but his son-in-law, Lucien Malus, operated the plantation.
 Following the Civil War, the plantation, which had been called Constancia up until that time, came to be called Uncle Sam instead.
 Many different stories have attempted to explain the name.
One is that it came from the sugar containers from the plantation being marked for export with "U.S." for the nation of origin.
 Others claim that it referred to Samuel Fagot himself.
 None has been confirmed by historians.

Felicie and Lucien Malus had two daughters, Emelie and Felicie.
 They married two brothers, Jules and Camile Jacob.
 Following the death of Lucien Malus, the Jacob brothers operated the plantation.
 Jules later bought Camile's share and was the sole owner of the plantation until selling in 1915 to a New Orleans businessman.
 The plantation's main house would never be lived in again after this transaction, although the estate continued to be operated as an agricultural enterprise.

In early 1940 the Pontchartrain Levee District commissioners determined that the only way to fix structural problems in the river levee would be to build a new one over the site.
 Demolition quickly followed.
 On March 12, 1940, as demolition was nearing completion, the United States Army Corps of Engineers office in New Orleans received a telegram from the director of the National Park Service asking that demolition be delayed until an investigation could be completed to determine if the site might be given National Monument or National Historic Site status.
 However, it was too late to save the plantation complex.

Following the demolition, 300,000 bricks from Uncle Sam were used in the restoration of another extensive plantation complex nearby, Evergreen Plantation in Wallace.
 A chemical plant, now owned by the Mosaic Company, was later built on the site.
 A historic marker was erected in 1969, the only reminder of what once was there.
The plantation was established by Colonel Joseph Constance when he acquired several tracts of land at the location following the War of 1812.  Pierre Auguste Samuel Fagot, usually known as Samuel Fagot, acquired the plantation and other St. James Parish properties beginning in 1829.  A native of La Rochelle, France, he emigrated to the United States and was living in the vicinity of Convent by 1828.  He married Emilie Jourdain and had two daughters, Marie Emilie Eugenie and Felicie.  Marie Emilie Eugenie married Jacques Auguste Demophon Tureaud and Felicie married Lucien Malus.
By the time of Samuel Fagot's death in 1858, he was one of the largest landowners in St. James Parish.  The plantation went to his widow after his death, but his son-in-law, Lucien Malus, operated the plantation.  Following the Civil War, the plantation, which had been called Constancia up until that time, came to be called Uncle Sam instead.  Many different stories have attempted to explain the name. One is that it came from the sugar containers from the plantation being marked for export with "U.S." for the nation of origin.  Others claim that it referred to Samuel Fagot himself.  None has been confirmed by historians.
Felicie and Lucien Malus had two daughters, Emelie and Felicie.  They married two brothers, Jules and Camile Jacob.  Following the death of Lucien Malus, the Jacob brothers operated the plantation.  Jules later bought Camile's share and was the sole owner of the plantation until selling in 1915 to a New Orleans businessman.  The plantation's main house would never be lived in again after this transaction, although the estate continued to be operated as an agricultural enterprise.
In early 1940 the Pontchartrain Levee District commissioners determined that the only way to fix structural problems in the river levee would be to build a new one over the site.  Demolition quickly followed.  On March 12, 1940, as demolition was nearing completion, the United States Army Corps of Engineers office in New Orleans received a telegram from the director of the National Park Service asking that demolition be delayed until an investigation could be completed to determine if the site might be given National Monument or National Historic Site status.  However, it was too late to save the plantation complex.
Following the demolition, 300,000 bricks from Uncle Sam were used in the restoration of another extensive plantation complex nearby, Evergreen Plantation in Wallace.  A chemical plant, now owned by the Mosaic Company, was later built on the site.  A historic marker was erected in 1969, the only reminder of what once was there.
Uncle Sam Plantation