They killed the entire 12 - man garrison outright , keeping the commander alive to write down the grievances of the Senecas .
Iroquois Senecas took Fort Venango ( near the site of the present Franklin , Pennsylvania ) around June 16 , 1763 .
Iroquois Senecas killed the entire 12 - man garrison outright , keeping the commander alive to write down the grievances of the Senecas .
Iroquois Senecas took Fort Venango ( near the site of the present Franklin , Pennsylvania ) around June 16 , 1763 .