Ripples from La Prairie Voyageur Canoes: CHAPTER 3: THE FATHERS OF THE FUR TRADE & THE BOURASSA DYNASTY (1659

SECTION I: THE TRADER FROM LUÇON — FRANÇOIS BOURASSA AT LA PRAIRIE

By the closing decades of the 17th century, the fur trade was no longer an opportunistic scramble of lone mountain men. It had transformed into a complex, highly organized corporate network spanning thousands of miles of uncharted rivers, lakes, and portages.

While the Godefroy truchements had mastered native dialects and the Leber family had built the merchant and agricultural staging grounds at Lachine and La Prairie, it was the Bourassa family who would take command of the river brigades themselves—earning the lasting title "Fathers of the Fur Trade."

THE BOURASSA-LE BER DYNASTIC UNION

François Bourassa (1659–1708)

[Trader / Brigade Commander]

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m. October 25, 1684 at La Prairie-de-la-Madeleine

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MARIE LE BER (1666–1756)

[Grand Matriarch of the South Shore]

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┌─────────────────┼──────────────────────────┐

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René Bourassa dit LaRonde François Joachim Bourassa Marie Elisabeth Bourassa

(1688–1778) [Michilimackinac] (1698–1775) [La Prairie Leader] (1695–1766) [m. Jacques Pinsonneau]

The architect of this line in North America was François Bourassa (1659–1708). Born in St-Mathurin de Le Bernard, near Luçon in Poitou, France, François was the son of François Bourassa and Marguerite Dugas. Raised near the salt marshes and river ports of western France, he possessed an imposing physical frame, a keen eye for logistics, and an appetite for wilderness commerce.

Arriving in New France in the late 1670s, François Bourassa headed straight for the upper St. Lawrence. He was not content to farm a small ribbon of land; he saw that the future of Canada lay along the Ottawa River highway.

François established his operational base at La Prairie-de-la-Madeleine, inserting himself directly into the logistical center of the south shore. On October 25, 1684, in the parish church of Notre-Dame-de-La-Prairie, François executed the most important contract of his life: he married eighteen-year-old Marie Le Ber (1666–1756).

By marrying Marie Le Ber, François Bourassa did not just acquire a wife—he married into the elite aristocracy of the Canadian river trade. Marie was the daughter of François Leber and Jeanne Testard de Laforest. In her veins flowed:

The noble wilderness diplomacy and language mastery of her grand-uncles Jean and Thomas Godefroy de Linctot.
The agricultural depth and riverfront landholdings of her father, François Leber.
The commercial capital, credit connections, and transatlantic merchant ties of her uncle, Jacques Leber dit Larose.
The double measure of Cavelier blood that connected her directly to the grand expansionist vision of René-Robert Cavelier, Sieur de La Salle.

François Bourassa provided the muscle, wilderness endurance, and leadership; Marie Le Ber provided the capital connections, aristocratic status, and administrative genius. Together, they established the Bourassa trading house as the premier outfitters of La Prairie.

SECTION II: THE BRIGADE COMMANDER & THE OTTAWA RIVER HIGHWAY

During the 1680s and 1690s, François Bourassa spent long months away from La Prairie, taking his seat in the stern of heavy birchbark freight canoes bound for the western interior (le Pays d'en Haut).

Commanding a canoe brigade required far more than physical strength. A brigade captain (conducteur) had to be a master navigator, a diplomat, a judge, and a wilderness strategist.

THE ROUTE OF THE OTTAWA BRIGADES

[La Prairie / Lachine] ──► Ottawa River (Mattawa Portage) ──► Lake Nipissing

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▼

[Michilimackinac / Detroit] ◄── Lake Huron (Georgian Bay) ◄── French River

The standard route west from La Prairie was a brutal, thousand-mile obstacle course:

The Ottawa River Ascent: Fighting upstream against roaring chutes and heavy currents, forcing crews to pole, line, or drag loaded canoes through bone-chilling water.
The Portages: At places like Long Sault or the Mattawa, every single four-ton canoe had to be unloaded. Rivermen hoisted two 90-pound supply packs (pièces) on their backs—held by a leather tump-line (collier) across the forehead—and trotted through mud, mosquitoes, and jagged granite trails before returning to carry the 300-pound birchbark canoe itself.
The French River & Lake Huron: Descending the rock-choked French River into the treacherous, open-water storms of Georgian Bay and Lake Huron before reaching the strategic crossroads at Fort Michilimackinac or Fort Detroit.

François Bourassa secured official trading licenses (congés) from the Governor-General of New France, outfitting multi-canoe expeditions loaded with trade axes, brass kettles, wool coats, powder, and lead shot.

His crews were made up of local young men from La Prairie—neighbors, cousins, and in-laws—who trusted François to guide them through Iroquois ambushes, treacherous rapids, and winter starve-times.

While François paddled the western rivers, he left the entire home base at La Prairie in the hands of his wife, Marie Le Ber. It was a partnership forged in necessity: the men won the furs in the wilderness, but the women managed the empire at home.

SECTION III: MARIE LE BER — THE GRAND MATRIARCH OF LA PRAIRIE (1708–1756)

On May 9, 1708, disaster struck the Bourassa household. François Bourassa died at La Prairie at the relatively young age of forty-nine, worn down by decades of icy river water, crushing portage loads, and relentless wilderness physical strain.

Marie Le Ber was left a widow at age forty-two. She had a household of young children to support, complex agricultural landholdings to maintain, and dozens of outstanding trade contracts and credit debts scattered between Montréal, Albany, and Michilimackinac.

In colonial French legal culture, a widow (veuve) possessed a unique and powerful legal standing. Under the Coutume de Paris (the civil law of New France), a widow retained full control over her late husband's estate, property, and business contracts. Where many women might have sold off the family trading licenses and retired to quiet farming, Marie Le Ber took total control of the Bourassa trading firm.

MARIE LE BER'S FIFTY-YEAR REIGN (1708–1756)

[Secures Royal Trade Licenses] ──► [Finances & Outfits Canoes] ──► [Hires La Prairie Crews]

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▼

[Directs Family Outposts] ◄── [Manages Credit & Fur Sales] ◄── [Sends Sons to Interior]

(Michilimackinac / Detroit)

For nearly half a century—from 1708 until her death in 1756 at the age of ninety—Marie Le Ber reigned as the undisputed grand matriarch of the La Prairie fur trade:

The Financial Manager: She negotiated directly with the grand merchant outfitters in Montréal (including her Leber and Le Moyne kin), securing thousands of livres in credit for trade goods.
The Contract Administrator: She drafted legal notary agreements (engagements), hiring dozens of local La Prairie voyageurs to paddle her family’s canoes.
The Agricultural Director: She expanded the Bourassa farm at La Prairie, transforming it into a major producer of wheat, peas, and cured salt pork—the non-perishable provisions required to feed outbound river brigades.
The Dynastic Strategist: She dispatched her sons—René, François Joachim, and Antoine—into the western wilderness to establish permanent Bourassa trading posts at Michilimackinac, Detroit, and Green Bay, while keeping her daughters anchored in powerful marriages along the St. Lawrence.

When merchants, voyageurs, or royal officials crossed the river from Montréal to La Prairie, they went to the Bourassa homestead to deal directly with la Veuve Bourassa. Marie Le Ber possessed the sharp business mind of her uncle Jacques Leber, the land-reclaiming determination of her father François Leber, and the noble confidence of her Godefroy heritage.

SECTION IV: THE THREE SONS & THE EXPANSION OF THE WESTERN TRADE

Under Marie Le Ber's direction, her sons expanded the family business across every major trade corridor of the North American interior.

THE THREE BOURASSA TRADE CORRIDORS

MARIE LE BER (Widow / Manager)

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┌────────────────────┼──────────────────────┐

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René Bourassa dit LaRonde François Joachim Bourassa Antoine Bourassa

(1688–1778) (1698–1775) (1705–1786)

• Post Trader at Mackinac • Master Captain at La Prairie • Western Supply Logistics

• Dakota / Western Expansion • Ottawa Brigade Commander • Illinois & Detroit Runs

1. René Bourassa dit LaRonde (1688–1778)

The eldest son, René, became the bold, roving western advance guard of the family. He pushed deep into the Upper Great Lakes, establishing a permanent residential trading complex at Fort Michilimackinac. René married Agnes Gagné in 1710 and, following her death, married Marie-Anne Chevalier.

René became a legend across the West—a master negotiator who spoke Ojibwe and Odawa fluently, operated trading posts near Lake Superior, and joined Sieur de La Vérendrye's famous western expeditions toward the Rocky Mountains.

2. François Joachim Bourassa (1698–1775)

While René managed the far-off posts in the interior, his younger brother François Joachim remained anchored at La Prairie as the master brigade captain and home-base coordinator. François Joachim married Marie Anne Garand in 1721.

François Joachim was a giant along the Ottawa River route. Every spring, he took command of the main Bourassa canoe fleet at La Prairie, leading dozens of 35-foot freight canoes up the rapids to supply his brother René at Michilimackinac before returning to Montréal laden with thousands of prime beaver pelts.

3. Antoine Bourassa (1705–1786)

The youngest son, Antoine, specialized in the southern and western supply lines, navigating the dangerous river routes connecting Montréal to Fort Detroit, the Miami posts, and the Illinois Country. Antoine married Marie Anne Cassé in 1728, securing the family's logistics along the St. Lawrence and Lake Erie corridors.

Together, the three brothers and their mother formed a seamless transcontinental enterprise. No matter where a French voyageur traveled between Montréal and the Mississippi River, he slept in a Bourassa trading post, paddled a Bourassa canoe, or carried trade goods stamped with the Bourassa mark.

SECTION V: THE MERGER WITH THE PINSONNEAU LINE (1712)

While Marie Le Ber and her sons built their commercial fur empire, the family’s future was secured through a momentous marriage that brought together two of La Prairie's greatest lines.

On August 1, 1695, Marie Le Ber had given birth to a daughter, Marie Elisabeth Bourassa (1695–1766). Raised in the heart of the Bourassa trading house, Marie Elisabeth possessed a deep understanding of the river trade and the resilient spirit of her mother.

On October 9, 1712, in the parish church at La Prairie, seventeen-year-old Marie Elisabeth Bourassa married thirty-year-old Jean dit Jacques "Jacques" Pinsonneault dit Lafleur (1682–1773).

THE BOURASSA-PINSONNEAU EMPIRE MERGER

François Pinsonneau dit Lafleur François Bourassa

(Carignan-Salières Soldier) (Luçon Fur Trader)

m. Anne Leber (*Fille du Roi*) m. Marie Le Ber (Grand Matriarch)

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Jacques Pinsonneault dit Lafleur ◄──────────────────► Marie Elisabeth Bourassa

(1682–1773) [*Booshway* Leader] (m. Oct 9, 1712) (1695–1766) [Bourassa Heiress]

│

Joseph Pinsonneau (1733–1799)

m. Marie Madeleine Duquet

Jacques Pinsonneault was the son of Carignan-Salières veteran François Pinsonneau and Fille du Roi Anne Leber. He was already a famous independent trader and booshway (bourgeois/brigade leader)—a man who had spent years leading canoe crews through the western wilderness.

This marriage was a monumental union of frontier power:

It joined the military grit and independent paddling reputation of the Pinsonneault line with the commercial wealth, landholdings, and trade monopolies of the Bourassa-Leber empire.
It ensured that the Pinsonneaults would step directly into the front ranks of the Bourassa canoe fleets, commanding supply runs to Detroit, Michilimackinac, and the Far West.

From this union was born Joseph Pinsonneau (1733–1799), who would grow up to marry Marie Madeleine Duquet—daughter of La Prairie's master canoe builder—binding the paddlers, the merchants, and the shipwrights into one single, unbreakable dynasty.

When Marie Le Ber finally passed away at La Prairie on October 25, 1756, at the age of ninety, she looked out upon an empire. She had survived Indian massacres, frontier wars, and forty-eight years of widowhood. She had built a legacy that reached from the docks of Rouen to the farthest posts of the Great Lakes.

Her sons and grandsons were the undisputed masters of the St. Lawrence riverways—and the stage was now set for her son René Bourassa to step into the darkest, most heroic chapter of wilderness survival the West had ever seen...

NEXT: CHAPTER 4- OUTLAWS, OUTPOSTS, & WILDERNESS SURVIVAL- RENÉ BOURASSA DIT LARONDE (1722–1778)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/chapter-4-outlaws-outposts-wilderness.html

EMPIRES OF THE WILDERNESS- THE VOYAGEUR BLOODLINE OF LA PRAIRIE (1585–1917)

CHAPTER 1- THE VIKING TRAIL, CHAMPLAIN’S TRUCHEMENTS, & THE NORMANDY LINE (890–1678)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/empires-of-wilderness-voyageur.html

CHAPTER 2- THE STAGING GROUND AT LA PRAIRIE & THE LACHINE MONOPOLY (1626–1723)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/chapter-2-staging-ground-at-la-prairie.html

CHAPTER 3- THE FATHERS OF THE FUR TRADE & THE BOURASSA DYNASTY (1659–1756)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/chapter-3-fathers-of-fur-trade-bourassa.html

CHAPTER 4- OUTLAWS, OUTPOSTS, & WILDERNESS SURVIVAL- RENÉ BOURASSA DIT LARONDE (1722–1778)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/chapter-4-outlaws-outposts-wilderness.html

CHAPTER 5- UNITING THE LINES- THE CARIGNAN SOLDIER & THE BOOSHWAY (1682–1773)