Fort Bosley
Derry Township, Montour County, Pennsylvania
Marker Inscription
Located in the forks of the Chillisquaqua on east bank of the north branch. Here in 1777 a small force stockaded and garrisoned Bosley's mill for protection against Indian marauders.
Erected by Pennsylvania Historical and Museum Commission
The Story
In 1777, as the Revolution raged and the Pennsylvania frontier grew dangerous, settlers along the forks of Chillisquaque Creek fortified Bosley's mill, stockading and garrisoning it against raids. Such improvised frontier forts were the everyday reality of the backcountry war, where mills, farms, and blockhouses doubled as refuges. The site reflects a conflict fought not only on famous battlefields but in the woods and clearings of the northern branch of the Susquehanna.
Why it matters
It preserves the memory of the Revolution's frontier dimension, where ordinary settlers turned their own mills into forts to survive the war's spillover into the wilderness.
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Related events
- · Fortification of Bosley's Mill (1777)
Themes & tags
Nearby & related markers
The Sullivan Expedition Against the Iroquois Indians - Fort Freeland - PLAQUE
Delaware Township, PA · est. 1929
Jacob Freeland raised a mill on this ground in 1773 and, as war reached the frontier, stockaded it in 1778 for defense. On July 28, 1779, British-allied Tories and Seneca warriors attacked and destroyed the fort, and the inscription records that 108 settlers were killed or taken prisoner. The assault came at the height of the brutal frontier fighting that Sullivan's expedition was meant to answer.
Fort Freeland
Delaware Township, PA · est. 1947
As the Revolution reached the Pennsylvania frontier, settlers fortified Jacob Freeland's house in 1778, ringing it with a stockade against raids. On July 29, 1779, a force of British and allied Indians overwhelmed the small post, and its garrison of 21 were killed or captured—one of the sharp, deadly clashes that made the upper Susquehanna a war zone.
Fort McClure
Bloomsburg, PA · est. 1948
After frontier raids destroyed nearby Fort Jenkins in 1780, the noted borderland fighter Moses Van Campen stockaded the McClure house early in 1781 to shelter settlers along the north bank of the Susquehanna. The improvised fort stood in what is now Bloomsburg, part of a chain of refuges thrown up as the Revolution's frontier war ground on. Such places were less military garrisons than desperate havens for families caught between armies and raiding parties.
Muncy Mills
Muncy Creek Township, PA · est. 1947
Around 1772 John Alward raised this valley's first gristmill, a cornerstone of any frontier settlement where neighbors brought grain to be ground into flour and meal. Burned by Native raiders in 1779 amid the Revolution's border warfare, it was rebuilt again and again—new mills rising in 1783 and 1800—and the last of them ground on until 1872, a full century of milling on one spot.