Fort Granville (Granville Township, Mifflin County (near Lewistown), Pennsylvania)
Granville Township, Mifflin County (near Lewistown) · Pennsylvania · French and Indian War

History & Significance
Fort Granville was erected by Captain George Croghan in December 1755 and formally named in January 1756 by Governor Robert Hunter Morris in honor of John Carteret, 2nd Earl Granville. The square stockade measured approximately eighty-three paces per side with bastions at each corner and was designed to hold up to fifty men.
It served as a key defensive post following the catastrophic British defeat at the Battle of the Monongahela in July 1755, which opened the Pennsylvania frontier to French-allied Lenape, Delaware, and Shawnee raiders. On August 2, 1756, while Captain Edward Ward and most of the garrison were absent protecting harvest workers in Sherman's Valley, Lieutenant Edward Armstrong remained in command with only twenty-four soldiers and civilians.
A mixed force of approximately 100 Native American warriors and 55 French soldiers, led by French Captain François Coulon de Villiers, attacked using a ravine for cover to approach the fort's walls. The attackers set fire to the palisade using burning branches and pine knots; as the stockade burned, Armstrong was shot twice while attempting to extinguish the flames and died from his wounds.
Sergeant John Turner surrendered the fort after approximately ten hours of fighting. Twenty-seven captives—soldiers, women, and children—were taken; Turner was later brought to Kittanning, where he was tortured and killed.
The fort was systematically burned following orders from the French commander. The fall of Fort Granville demonstrated the vulnerability of Pennsylvania's dispersed frontier defense line.
The stockade was never rebuilt; colonial authorities consolidated the defensive perimeter at Fort Augusta, Fort Hunter, and Fort Halifax. The capture prompted aggressive retaliation: in September 1756, Colonel John Armstrong led the Kittanning Expedition against the Lenape village that held some of the captives. The Pennsylvania Canal's construction in 1829 destroyed the site's distinguishing spring, erasing precise archaeological markers of the fort's location.
Key Facts
Map
View larger map ↗ · © OpenStreetMap contributors
🧳 Visiting
What you’ll see when you visit:
- French and Indian War-era militia stockade ruins near Lewistown
- Historical marker commemorates 1756 attack and destruction
- Site reflects Pennsylvania's colonial frontier defense strategy
- Scenic rural location in Mifflin County countryside
Sources
- https://en.wikipedia.org/wiki/Fort_Granville
- https://www.battlefields.org/learn/french-indian-war/battles/fort-granville
- https://www.hmdb.org/m.asp?m=52375
- https://www.legendsofamerica.com/fort-granville-pennsylvania/
- https://theclio.com/entry/116616
- https://en.wikipedia.org/wiki/Pennsylvania_forts_in_the_French_and_Indian_War
- https://sites.rootsweb.com/~pamiffli/twp-history.html
Other Forts in Pennsylvania
See all forts in Pennsylvania →