Louis-Thomas Chabert de Joncaire

Louis-Thomas Chabert de Joncaire (; 1670 – June 29, 1739), also known as Sononchiez by the Iroquois, Joncaire came to Canada in approximately 1687 as a cavalry sergeant in the Governor General's Guard.

In August 1711, when New France was threatened by an attack from the English, Joncaire and Michel Maray de La Chauvignerie convinced several Native American tribes to renew their alliance with New France at a banquet in Montreal by singing an Iroquois war song.

Joncaire gained permission from the Iroquois to expand Fort Niagara from a trading house to a wooden stockade capable of holding 300 men. He served as the commander of Fort Niagara until 1726. He died in Canada soon after the end of the Seven Years' War. He established Fort du Portage near Niagara Falls and fought in the Battle of Fort Niagara during the French and Indian War.