Question: Marshall Point Light Station is a lighthouse at a settlement that is located in which county ?

Context paragraphs:
Pigeon Point Lighthouse: Pigeon Point Light Station or Pigeon Point Lighthouse is a lighthouse built in 1871 to guide ships on the Pacific coast of California.  It is the tallest lighthouse (tied with Point Arena Light) on the West Coast of the United States.  It is still an active Coast Guard aid to navigation.  Pigeon Point Light Station is located on the coastal highway (State Route 1), 5 mi south of Pescadero, California, between Santa Cruz and San Francisco.  The 115 ft , white masonry tower, resembles the typical New England structure.  Because of its location and ready access from the main highway, Pigeon Point entertains a large number of public visitors.

List of lighthouses in Massachusetts: This is a list of all lighthouses in the U.S. state of Massachusetts as identified by the United States Coast Guard.  Enumeration of the lighthouses in this state is complicated by the number of multiple tower stations and replacement of older towers, with the Brant Point Light station having had nine towers, two of which survive.  At present there are forty-seven active towers, of which eleven are privately maintained; thirteen are standing but inactive, seven have been replaced with skeleton towers, thirteen have been destroyed or removed, and one tower has been moved to another state.  The oldest station, Boston Light, established in 1716, was the first lighthouse built in the colonies, and the current tower at that station, built in 1783, is the oldest survivor in the state and the second oldest in the nation, and was the last lighthouse automated in the United States.  The last station established was at the Buzzards Bay Entrance Light in 1961 (since replaced by an automated light on a steel tripod), but in 1986 the 1818 Great Point Light was rebuilt and relit, making it the last tower constructed in the state.  The tallest towers in the state are the two Cape Ann Light towers, but the highest focal plane is at the Hospital Point Range Rear Light, which is located in the steeple of the First Baptist Church of Beverly.

Fort Point Light (Maine): The Fort Point Light, or Fort Point Light Station, is located in Fort Point State Park, in Stockton Springs, Maine.  A lighthouse at this point has served as an active aid to navigation since 1835; the present lighthouse dates to 1857, and is listed on the National Register of Historic Places.

Port Clyde, Maine: Port Clyde is the southernmost settlement on the St. George peninsula in central/coastal Maine and part of the town of St. George in Knox County, Maine, United States.

Grindel Point Light: Grindel Point Light (also spelled Grindle Point Light) is a lighthouse in Islesboro, Maine, marking the west entrance to Gilkey Harbor at the westernmost point of the eponymous island.  The light station was established in 1850, and the present tower and keeper's house were built in 1874.  The station was deactivated in 1934 and reactivated in 1987.  It was listed on the National Register of Historic Places in 1987.  The keeper's house now houses the Grindle Point Sailor's Museum and the lighthouse tower is open for tours in the summer.

Marshall Point Light: Marshall Point Light Station is a lighthouse at the entrance of Port Clyde Harbor in Port Clyde, Maine.  The light station was established in 1832.

Perkins Island Light: Perkins Island Light is a lighthouse on the Kennebec River in Maine.  It was established in 1898, as part of a major upgrade of the river's lights — the Doubling Point Light and the separate Range Lights on the point, Perkins Island Light, and Squirrel Point Light were all built at the same time.  It was listed on the National Register of Historic Places as Perkins Island Light Station in 1988.

Doubling Point Light: Doubling Point Light is a lighthouse on the Kennebec River in Arrowsic, Maine.  It was established in 1898, fifteen years after the founding of the Bath Iron Works, a major shipbuilder, 1.5 mi upriver.  It was part of a major upgrade of the river's lights — the Doubling Point Light and the separate Range Lights on the point, Perkins Island Light, and Squirrel Point Light were all built at the same time.  The light was listed on the National Register of Historic Places as Doubling Point Light Station on January 21, 1988.  It remains an active aid to navigation.

Squirrel Point Light: Squirrel Point Light is a lighthouse marking the southwestern point of Arrowsic Island on the Kennebec River.  It was established in 1898, as part of a major upgrade of the river's lights — the Doubling Point Light and the separate Range Lights on the point, Perkins Island Light, and Squirrel Point Light were all built at the same time.  The light station was listed on the National Register of Historic Places as Squirrel Point Light Station on January 21, 1988.

Nobska Light: Nobska Light, originally called Nobsque Light, also known as Nobska Point Light is a lighthouse located at the division between Buzzards Bay and Vineyard Sound in Woods Hole, Massachusetts on the southwestern tip of Cape Cod, Massachusetts.  It overlooks Martha's Vineyard and Nonamesset Island.  The light station was established in 1826, with the tower protruding above the keeper's house, and was replaced in 1876 by the current 42 foot tall iron tower.  The light station was added to the National Register of Historic Places as Nobska Point Light Station in 1987.

Supporting paragraphs: Marshall Point Light Port Clyde, Maine
Answer: Knox County