How “black vomit” fever created Louisiana’s most famous plantation

Yellow Fever’s Deadly Toll on the Duplantiers

Yellow fever hit Louisiana hard in 1799. Augustine Gerard Duplantier died from it on August 28, just after giving birth to her daughter.

Her husband Armand, who had fought in the Revolutionary War as Lafayette’s aide, was left alone with four young kids.

The deadly disease had swept through Louisiana since 1796, killing hundreds and earning the grim nickname “black vomit.”

Two years after his wife’s death, the grieving Armand wed Constance Rochon Joyce, a widow whose late husband had owned Magnolia Mound Plantation.

Through this marriage, fate turned tragedy into legacy as the historic property passed to the Duplantier name. The magnificent French Creole plantation house still stands today, telling their story to all who visit.

Lafayette’s War Hero Found a New Home in Louisiana

Armand Duplantier came to Louisiana in March 1781 after fighting alongside General Lafayette in the American Revolution.

He faced many dangers traveling from Fort Pitt through the wilderness to reach the Mississippi River area. His uncle Claude Trénonay asked him to come help run his big plantation in Pointe Coupée Parish.

The French soldier quickly got used to life in Spanish-controlled Louisiana and learned how to run a successful plantation in the hot, humid South.

Wedding Bells Rang Quickly for the New Arrival

Just a few months after arriving in Louisiana, Armand married Augustine Gerard in July 1781. Augustine was the daughter of a dead fort doctor and the stepdaughter of Armand’s uncle Claude Trénonay.

They got married at Trénonay’s large Pointe Coupée Parish plantation with family and local big shots watching.

Their marriage helped Armand fit into Louisiana society and started what would become an important family in the area’s history.

Seven Children Filled Their Growing Household

From 1783 to 1799, Augustine had seven children, but only four lived to grow up.

The surviving Duplantier kids were Fergus Augustin, Armand Allard, Guy Allard, and Augustine Eulalie. Armand worked hard to build their future by growing cotton, indigo, and tobacco on their lands.

The family did well under Spanish rule, with Armand’s army background and French connections helping him deal with the tricky politics of frontier Louisiana.

Mosquitoes Carried a Deadly Threat to New Orleans

Yellow fever first hit Louisiana hard in 1796, killing 638 people out of New Orleans’ 8,756 residents.

The sickness spread through mosquito bites, making victims suffer high fevers, terrible headaches, bone-chilling cold, and later, yellow skin.

People called it the “black vomit” because sick people often threw up dark blood from their damaged stomachs. Summer and fall months brought fear as the disease swept through towns with no warning and no good treatment.

A New Baby Girl Joined the Family in 1799

Augustine had her daughter Augustine Eulalie in summer 1799, during Louisiana’s dangerous yellow fever season.

The birth went well, but the timing put the new mom at higher risk for getting sick as her body healed from childbirth.

Little Augustine Eulalie was the couple’s last child together, joining her three living brothers in the Duplantier home. The family celebrated the new baby, not knowing that trouble would soon hit their home.

The Deadly Fever Claimed Augustine’s Life

On August 28, 1799, Augustine Gerard Duplantier died from yellow fever, leaving behind her newborn daughter and three young sons.

The disease killed her quickly, going from first signs to death within days as the virus attacked her body. Augustine died during a very bad outbreak that killed many people across Louisiana that summer.

People buried her body fast, as they did with all yellow fever victims, to stop what they thought was a catching disease.

Armand Faced Life as a Single Father

The war veteran now fought a battle he never trained for – raising four kids alone while running big plantations. Armand took care of Fergus, Armand Allard, Guy Allard, and baby Augustine Eulalie while mourning his wife.

Slaves helped with childcare, but the emotional weight fell on Armand’s shoulders. He kept the plantation business going despite his personal loss, knowing his children’s future depended on his success.

A Letter Home Revealed His Plans for a New Marriage

Three years after Augustine died, Armand wrote to his sister in France about his plan to remarry.

In his January 1802 letter, he spoke nicely about his dead wife while calling his new love interest a “Mobile Creole” with good character.

Armand carefully explained his choice, talking about how hard it was raising young children alone and his need for company.

The letter showed Armand balancing respect for Augustine’s memory with his need to move forward for his family.

Constance Brought Magnolia Mound Into the Family

Armand married Constance Rochon Joyce on January 4, 1802, exactly three years after Augustine died. Constance was also a widow whose husband John Joyce had died in 1798.

Through this marriage, Armand got Magnolia Mound Plantation, a property that would become key to the Duplantier family story.

Constance brought stability back to the home and soon added to the family, eventually having five more Duplantier children.

The Plantation Became a Center of Influence

Magnolia Mound turned into the Duplantier family home after Armand married Constance. The property had a nice main house, slave quarters, and fields growing valuable crops for market.

Armand and Constance grew the plantation business and made their home a center of Louisiana social and political life.

The war hero used his army connections and business smarts to put his family among the top people in the area as Louisiana changed from Spanish control to American ownership.

Yellow Fever Rewrote the Story of Magnolia Mound

Augustine’s tragic death from yellow fever directly led to the Duplantier acquisition of Magnolia Mound through Armand’s second marriage.

What began as the Joyce family estate became forever linked with the Revolutionary War veteran and his descendants. The plantation stands today as a historic museum, preserving the Duplantier era for visitors to explore.

The yellow fever epidemic of 1799 not only took Augustine’s life but unexpectedly redirected the course of Louisiana plantation history by bringing Magnolia Mound into the Duplantier family legacy.

Visiting Magnolia Mound Plantation, Louisiana

Magnolia Mound Plantation at 2161 Nicholson Drive in Baton Rouge tells the story of Augustine Gerard Duplantier, who died in the 1799 yellow fever epidemic that devastated Louisiana.

Her death left Revolutionary War veteran husband Armand widowed with four children. You can tour the house Monday-Saturday 10am-4pm, Sunday 1-4pm for $12 adults.

The sixteen-acre grounds include slave cabins, pigeonnier, and carriage house, plus open-hearth cooking demonstrations October through May.

This article was created with AI assistance and human editing.

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