The rumors were true. The commissioners learned from Major Abraham Schuyler and others that the French had sent 120 men to Jagara (Niagara) to build a new fort there on the south side of the river. French ships filled with lime for its construction were on their way from Cadarachqui, the site of present day Kingston Ontario. A strong new fort at Niagara would cut off native fur traders bringing their goods to Oswego or Albany from the Great Lakes, and would even prevent the Senecas from returning with furs from their hunting territories. The French planned to store goods at Niagara in order to replace the English as suppliers to all the nations in the area.
The commissioners heard that the French had 400 militia men ready to go to Niagara to defend the fort if need be. They urged the governor to look for a legal remedy based on the treaty in force between France and England. Major Schuyler sent several letters that were not copied into the record, although there is a space left for them. The Onondaga Indians who brought the most recent one appeared to be suspicious of the English and the commissioners urged the governor once again to post some “men of Experience and Conduct” in Iroquoia to restore good relations between the British and the Six Nations.
An Old Frontier of France, by Frank Severance (NY: Dodd, Mead, 1917, p. 225 et seq.) explains in detail how Fort Niagara was planned and constructed. Below is the plan drawn up for the new fort by Governor Vaudreuil’s military engineer, Gaspard-Joseph Chaussegros de Lery.
In Library and Archives Canada’s digital copy of the original minutes, June 1726 starts here.