Clinton County
Lock Haven, Clinton County, Pennsylvania
Marker Inscription
Formed on June 21, 1839 out of Lycoming and Centre counties. Named probably for New York's Gov. DeWitt Clinton. Site of "Tiadaghton Declaration of Independence," 1776. In 19th century a lumbering center. Lock Haven, the county seat, became a city in 1870.
Erected by Pennsylvania Historical and Museum Commission
The Story
Clinton County was carved from Lycoming and Centre in 1839 and most likely named for New York's Governor DeWitt Clinton, the champion of the Erie Canal. Its ground carries an older memory: the 1776 'Tiadaghton Declaration of Independence,' when frontier 'Fair Play' settlers reportedly declared their own independence in the same season as the Continental Congress. By the 19th century the county was a busy lumbering center, and Lock Haven, its seat, became a city in 1870.
Why it matters
The Tiadaghton story captures how the spirit of 1776 reached even Pennsylvania's raw frontier, where settlers beyond the reach of colonial law claimed the same right to self-government being proclaimed in Philadelphia.
The story behind this marker
AI contextThe era
Clinton County was formed on June 21, 1839, out of Lycoming and Centre counties, part of the steady process by which Pennsylvania's interior was divided into new local governments as its population grew. But the ground it covers carries memories far older than 1839 — memories reaching back to the Revolution and the raw frontier that preceded settled county life.
The county was most likely named for DeWitt Clinton, the New York governor famous as the driving force behind the Erie Canal. That an inland Pennsylvania county would honor a New York champion of canals says much about the age — this was a time when Americans believed passionately that canals and improved waterways would knit the young nation together.
Lock Haven, the county seat, grew into a working river town and was chartered as a city in 1870, its fortunes tied to the West Branch of the Susquehanna and the industries that river made possible.
People & events
The county's oldest and most stirring story is the "Tiadaghton Declaration of Independence" of 1776. According to the tradition, frontier settlers in this region — living on lands beyond the reach of established colonial authority — gathered and declared their own independence, reportedly in the very same season that the Continental Congress was proclaiming it in Philadelphia.
These were the so-called "Fair Play" settlers, frontier folk who governed themselves by their own rough system of local justice because they lived past the legal boundary of organized settlement. That such people would reach, on their own, for the same language of independence is a striking image of how deeply the revolutionary spirit ran. As with many frontier traditions, the details are remembered more in local memory than in official record, but the story has been cherished here for generations.
By the nineteenth century the county's energies turned to industry. Like its neighbors along the West Branch, it became a busy lumbering center, and the river carried the timber that built the region's prosperity and gave Lock Haven its working-city character.
Its place in the American story
The Tiadaghton story captures something essential about 1776: that the desire for self-government was not confined to the statesmen and merchants of the seaboard cities. It reached the farthest edges of settlement, to people living beyond the maps and the courts.
The "Fair Play" settlers had already been governing themselves out of sheer necessity, making their own rules on land the law had not yet reached. When word of the larger revolution came, they claimed the same right to independence that was being proclaimed in the capital — the frontier and the founders speaking with one voice.
And in the county's later name and later industry you can read the other great American theme of the age: connection and growth. Named for a canal champion and built up by lumber and the river, Clinton County belongs to the story of a young nation determined to link its regions and put its abundant resources to work.
If you visit
Lock Haven is the place to start, a river city whose streets and setting still reflect its nineteenth-century working life along the West Branch of the Susquehanna. Take in the riverfront and imagine the timber town it once was.
Hold in your mind the two very different ages this ground remembers — the frontier settlers of 1776 reaching for independence on the edge of the wilderness, and the busy lumber and canal-minded era that came later. Few places layer the raw frontier and the industrial river town so closely together.
This makes a rich stop on a drive through central Pennsylvania's river valleys. Follow the West Branch, linger in Lock Haven, and let the mingling of Revolutionary legend and lumber-era history give the day its texture.
Written by AI to add context, grounded in the marker’s inscription and the historical record. The inscription above is the original, unaltered text.
Own a business near here? Add it to the map.
Related people
- · DeWitt Clinton
Related events
- · Tiadaghton Declaration of Independence
Themes & tags
Nearby & related markers
Widow Catherine Smith
White Deer Township, PA · est. 1967
In 1774 Catherine Smith, a widow, established a stone house and a complex of saw and grist mills along this stretch of the West Branch frontier. When the Revolution came, she built a boring mill in 1776 that finished gun barrels for the Continental Army, turning a backwoods industrial site into a small arsenal for the war effort. Running such works alone in a contested wilderness was a formidable undertaking for anyone, and remarkable for a woman of her day.
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.
McAlevy's Fort
Jackson Township, PA · est. 2018
In 1778, as the Revolution reached the Pennsylvania frontier, Col. William McAlevy — a pioneer settler and Revolutionary War officer — raised a blockhouse near this spot to shelter early settlers from raids. Decades later, in the 1840s, the entrepreneur Robert McBurney founded a village here and spent the following years developing it. Nearby 19th-century ironworks and mills fueled the community's growth, layering an industrial chapter atop its frontier origins.
Pennsylvania Canal (West Branch Division)
Lock Haven, PA · est. 1952
Built between 1828 and 1834, the West Branch Division of the Pennsylvania Canal carried the traffic of the upper Susquehanna region down to eastern markets. Boats loaded with iron, lumber, and manufactured goods moved along this artificial waterway until 1889. Here the Bald Eagle Cross Cut Canal tied in through two locks, a dam, and a towpath bridge, knitting the region's valleys into a single commercial network.