Question: Which  town in Grafton County, New Hampshire was "Cockermouth Grant", an early name for a portion of

Context paragraphs:
Newfound Lake: Newfound Lake is located in Grafton County, New Hampshire, United States.  It is situated in the Lakes Region of central New Hampshire, in the towns of Alexandria, Bridgewater, Bristol, and Hebron.  Its area of 4451 acre places it behind only Lake Winnipesaukee and Squam Lake among lakes located entirely within New Hampshire, and fourth in the state overall, when Umbagog Lake on the Maine border is included.  Newfound Lake is refreshed twice a year by eight underground springs and has 22 mi of shore line.  The lake is about 2.5 mi wide and 6 mi long.  The deepest point is 183 ft .  Major tributaries include the Fowler River and the Cockermouth River.  Its outlet is the Newfound River, flowing through Bristol village into the Pemigewasset River.  The lake volume is 98 billion gallons of water.

Old Grafton County Courthouse: The Old Grafton County Courthouse is a historic courthouse building at 1 Court Street in Plymouth, New Hampshire.  This modest wood frame building was built in 1774 to serve as one of two courthouses for Grafton County, which had just been established; it is one of the oldest surviving civic structures in the state.  It was described at the time of its construction as having "a stately cupola out of proportion to the diminutive size of the structure".  After a new courthouse was built in 1823, the building was sold and moved to the outskirts of Plymouth, and used as a wheelwright's shop, undergoing significant alteration to accommodate that function.  In 1876 the building was acquired by the Young Ladies' Library Association, which moved it to its present location and restored it (except the cupola, of which a replica was added sometime before 1906).  It is now the museum of the Plymouth Historical Society.

Hebron, New Hampshire: Hebron is a town in Grafton County, New Hampshire, United States.  The population was 602 at the 2010 census.  Settlements include the town center and the village of East Hebron.

Twin State Mutual Aid Fire Association: The Twin State Mutual Aid Fire Association ("Twin State") is the dispatch center and coordinating agency for fire and emergency medical services operations in 23 towns in Grafton County, New Hampshire, and Orange County and Caledonia County in Vermont.  Dispatching duties are handled by the Grafton County Sheriff's Department stationed in North Haverhill, New Hampshire.

Woodsville, New Hampshire: Woodsville is a census-designated place (CDP) in the town of Haverhill in Grafton County, New Hampshire, U.S., along the Connecticut River at the mouth of the Ammonoosuc River.  The population was 1,126 at the 2010 census.  Although North Haverhill is now the county seat of Grafton County, the village of Woodsville has traditionally been considered the county seat, as the county courthouse was originally located there.  The county buildings are now located halfway between Woodsville and the village of North Haverhill to the south.

Claremont–Lebanon micropolitan area: The Claremont–Lebanon Micropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of four counties – two in New Hampshire and two in Vermont, anchored by the cities of Lebanon, New Hampshire and Claremont, New Hampshire.  At the 2010 census, the area was defined as two separate Micropolitan Statistical Areas (μSAs), Claremont and Lebanon.  The Claremont μSA, consisting of Sullivan County, New Hampshire, had a population of 43,742, while the Lebanon μSA, comprising Grafton County, New Hampshire, and Orange and Windsor counties in Vermont, had a population of 174,724.  In 2013, the two areas were combined to form the Claremont-Lebanon μSA, and in 2015 the estimated population was 216,923.  The Claremont–Lebanon μSA is the most populous micropolitan area in the United States.

Haverhill, New Hampshire: Haverhill is a town in Grafton County, New Hampshire, United States.  The population was 4,697 at the 2010 census.  Haverhill includes the villages of Woodsville, Pike, and North Haverhill, the historic town center at Haverhill Corner, and the district of Mountain Lakes.  Located here are Bedell Bridge State Park, Black Mountain State Forest, Kinder Memorial Forest, and Oliverian Valley Wildlife Preserve.  It is home to the annual North Haverhill Fair, and to a branch of the New Hampshire Community Technical Colleges.  The village of North Haverhill is the county seat of Grafton County.

Lincoln, New Hampshire: Lincoln is a town in Grafton County, New Hampshire, United States.  It is the second-largest town by area in New Hampshire.  The population was 1,662 at the 2010 census.  The town is home to the New Hampshire Highland Games and to a portion of Franconia Notch State Park.  Set in the White Mountains, large portions of the town are within the White Mountain National Forest.  The Appalachian Trail crosses in the northeast.  Lincoln is the location of the Loon Mountain ski resort and associated recreation-centered development.

Cockermouth River: The Cockermouth River is a 9.5 mi stream located in central New Hampshire in the United States.  It is the longest tributary of Newfound Lake, part of the Pemigewasset River and ultimately Merrimack River watersheds.  The river takes its name from the "Cockermouth Grant", an early name for a portion of the town of Hebron.

North Haverhill, New Hampshire: North Haverhill is an unincorporated community and census-designated place (CDP) in the town of Haverhill in Grafton County, New Hampshire, United States.  It is one of several villages in the town of Haverhill, which is the county seat of Grafton County.

Supporting paragraphs: Cockermouth River Hebron, New Hampshire
Answer: Hebron