Louis Coulon de Villiers was born on August 10, 1710, at Verchères in New France, the son of Nicolas-Antoine Coulon de Villiers and Angélique Jarret de Verchères. He grew up in a large family whose identity was closely tied to military service. His maternal grandmother, Madeleine de Verchères, was renowned in colonial memory for defending a fortified homestead. Several of Louis’s brothers, including Joseph Coulon de Jumonville, became officers in the troupes de la Marine.

Louis entered colonial service at a young age and spent much of his early career at remote western posts. The officers of the troupes de la Marine were expected to command small garrisons, supervise trade, negotiate with Indigenous nations, and lead mobile war parties. Villiers learned the geography of the Great Lakes and Ohio country through canoe journeys, portages, and winter travel. He also became accustomed to the personal diplomacy upon which French alliances depended.

He served at posts including Fort Saint-Joseph and took part in campaigns during the Fox Wars, the prolonged French conflict with the Meskwaki and their allies. This fighting differed greatly from formal European warfare and required patience, scouting, negotiation, and sudden movement. Villiers’s experience earned him promotion to captain and a reputation as a capable western commander. He married Marie-Amable Prud’homme, linking his military career with family life in the colony.

By the early 1750s Villiers had decades of frontier experience and strong connections among Canadian officers and Indigenous communities. The expansion of French forts into the Ohio country placed his family near the center of imperial rivalry. When his brother Jumonville was killed in 1754, Louis was chosen to lead the force sent against the Virginia position at Great Meadows. His selection reflected both the personal obligation to avenge a brother and his professional suitability for an expedition through contested woodland territory.