Question: Katharine "Kate" Thatcher Clugston, was a playwright, poet, and English teacher, and passed away on Chebeague Island, an island town in Cumberland County, Maine, in which country?

Context articles: Kate Clugston
Cumberland County Jail
Great Chebeague Golf Club
Gerald Davis (politician)
Chebeague Island, Maine
Frenchboro, Maine
Hope Island (Maine)
Long Island, Maine
Harpswell, Maine
Cathy Breen

Katharine "Kate" Thatcher Clugston (1892, Whitley County, Indiana – 1985, Chebeague Island, Maine) was a playwright, poet, and English teacher.
The Cumberland County Jail is located in Portland, Maine, and is the largest jail in the state.
 The jail, a division of the Cumberland County Sheriff's Office, is a part of Cumberland County government and is wholly operated by the elected Sheriff.
 In 2002 it became the first jail in the state of Maine to receive national accreditation from the American Correctional Association, at the time putting it among only 4% of adult correctional facilities in the USA to have been so accredited.
 It has the capacity to accommodate 600 inmates, and employs over 200 staff (including 130 Corrections Officers).
 Most inmates are serving short sentences or awaiting trial.
The Great Chebeague Golf Club is a country club at 16 Stone Wharf Road in Great Chebeague Island, Maine.
 It has a nine-hole golf course on more than 28 acre on the north side of the island, and a clubhouse that is a repurposed c. 1807 residence, that is probably one of the oldest buildings used for that purpose in the nation.
 The club was listed on the National Register of Historic Places in 2015.
Gerald M. Davis (born 1936) is an American politician from Maine.
 Davis, a Republican from Falmouth, represented District 11 in the Maine Senate from 2008-2010.
 He was defeated for re-election in 2010 by unenrolled (independent) Richard Woodbury of Yarmouth.
 Davis' Senate district covered part of Cumberland County, specifically Chebeague Island, Cumberland, Falmouth, Gray, Long Island, North Yarmouth and Yarmouth.
 He served in the Maine House of Representatives from 1996 to 2006.
 He also served on the Falmouth School Board.
Chebeague Island is an island town in Cumberland County, Maine, United States, located in Casco Bay, 10 mi from Portland.
 These islands are sometimes referred to as an older, now archaic term "The Calendar Islands" because there was once a belief that the approximate number of islands was 365.
 The actual number is fewer than two hundred.
 Great Chebeague was a part of the town of Cumberland until July 1, 2007, when it became the town of Chebeague Island.
 As of the 2010 census, the town had a population of 341.
Frenchboro is a town in Hancock County, Maine, United States, and a village within this town located on Long Island, southeast of Swans Island - an island distinct from both the island town of Long Island in Cumberland County and the Long Island in Blue Hill Bay, southeast of Blue Hill Harbor.
 The population was 61 at the 2010 census.
Hope Island is a privately owned island in Casco Bay near the city of Portland, Maine, United States.
 It is a part of the Town of Chebeague Island, in Cumberland County.
 The 89 acre island was considered for an LNG terminal.
 Developer John Cacoulidis and his wife Phyllis bought the island in 1993.
 In addition to the existing 10,000 sq. ft. house built in 1913 with nine bedrooms, seven bathrooms and five fireplaces, the Cacoulidises built there a separate 3,300-square-foot guest house, a boathouse with an apartment, and roads looping the island.
 They've also erected horse stables, a chicken coop, a garage and their own church, and for access both a boat dock and a helicopter pad.
 In a dispute over property taxes, the two part-time residents attempted but failed in a legislative effort to secede from the town of Cumberland.
Long Island is an island town in Cumberland County, Maine, United States, which seceded from the city of Portland in 1993.
 The population was 230 at the 2010 census.
 It is part of the Portland–South Portland–Biddeford, Maine Metropolitan Statistical Area.
Harpswell is a town in Cumberland County, Maine, United States, within Casco Bay in the Gulf of Maine.
 The population was 4,740 at the 2010 census.
 Harpswell is composed of land contiguous with the rest of Cumberland County, called Harpswell Neck, as well as three large islands connected by bridges: Sebascodegan Island (locally known as Great Island), Orr's Island, and Bailey Island and over 200 smaller islands.
 Harpswell is part of the Portland–South Portland–Biddeford, Maine Metropolitan Statistical Area.
Catherine Breen is an American politician from Maine.
 Breen, a Democrat from Falmouth, Maine, represents District 25 in the Maine Senate.
 District 25 encompasses part of Cumberland County, Maine including the towns of Falmouth, Cumberland, Yarmouth, Gray, Long Island, Chebeague Island and a portion of Westbrook.