Question: Which English county is home of places with American-sounding names Boston and Eagle?

Context articles: Eagle Barnsdale
List of places of worship in Arun
War Eagle Bridge
List of places of worship in Sevenoaks District
Eagle, Lincolnshire
War Eagle, Arkansas
List of places of worship in Horsham District
Essex County, Massachusetts
Katesgrove
List of places of worship in Eastbourne

Eagle Barnsdale is a village in the North Kesteven district of Lincolnshire, England.
 The population can be found included in the civil parish of Eagle and Swinethorpe.
 It is situated approximately 7 mi south-east from the city and county town of Lincoln.
 The village of Eagle is to the north, with Morton Hall to the south.
The district of Arun, one of seven local government districts in the English county of West Sussex, has nearly 90 current and former places of worship.
 As of 2017, 68 active churches and chapels serve the dense urban development on the English Channel coast and the mostly rural hinterland of ancient towns and villages; a further 21 former places of worship still stand but are no longer in religious use.
 Many churches, serving a wide variety of Christian denominations, are located in the main towns of Littlehampton and Bognor Regis—Victorian seaside resorts which form the focal points of the nearly continuous urban area around the River Arun estuary.
 Surrounding villages, and their ancient and modern churches, have been absorbed by the 20th-century growth of these towns.
 Further north, the important hilltop town of Arundel has a Roman Catholic cathedral and a long established Anglican church, and was a centre of Nonconformist worship.
The War Eagle Bridge, a one lane steel bridge built in 1907, adjoins the War Eagle Mill, and carries County Route 98 over War Eagle Creek in Benton County, Arkansas.
 The bridge was listed on the National Register of Historic Places on November 19, 1985.
The district of Sevenoaks, one of 13 local government districts in the English county of Kent, has nearly 120 current and former places of worship.
 The town of Sevenoaks, the administrative centre of the area, has many of these—from its ancient Anglican parish church to Victorian chapels and 20th-century meeting places for various Christian denominations. Smaller towns such as Edenbridge, Swanley and Westerham are also well provided with places of worship; and the mostly rural district's villages and hamlets have many of their own, covering a wide variety of ages, architectural styles and denominations.
 As of 2017, 89 places of worship are in use in the district and a further 28 former churches and chapels no longer hold religious services but survive in alternative uses.
Eagle is a village in the North Kesteven district of Lincolnshire, England.
 It is situated 7 mi south-west from Lincoln and 2 mi east from North Scarle.
 Eagle is part of the civil parish of Eagle and Swinethorpe.
 The population of the civil parish taken at the 2011 census was 793.
War Eagle, Arkansas is an unincorporated community in Benton County, Arkansas, United States.
 It is the location of (or is the nearest community to) War Eagle Bridge, which carries CR 98 over War Eagle Creek and is listed on the National Register of Historic Places.
 It is also home to the 1832 War Eagle Mill which is still in operation as an undershot grist mill.
There are more than 110 current and former churches and other places of worship in the district of Horsham, one of seven local government districts in the English county of West Sussex.
 The town of Horsham, the district's administrative centre, has 86 places of worship in use as of 2017, and a further 27 closed churches which, although still standing, are no longer in religious use.
 The area has a long history of Christian worship, in both the main population centres (Horsham, Billingshurst, Henfield, Pulborough, Steyning and Storrington) and the surrounding villages and hamlets.
 Many Anglican churches are of Anglo-Saxon or Norman architecture.
 Roman Catholic places of worship include chapels within convents and priories, including England's only Carthusian monastery, as well as modern churches.
 Protestant Nonconformity has been well established since the 17th century.
 Plymouth Brethren are well represented in the north of the district; Baptists, Methodists and United Reformed Church worshippers have many churches; William Penn lived and preached in the area, which still has a strong Quaker presence; and one of eight chapels belonging to a now vanished local sect, the Society of Dependants, still stands at Warnham.
 There is also a mosque in the town of Horsham.
Essex County is a county in the northeastern part of the U.S. state of Massachusetts.
 As of the 2010 census, the total population was 743,159, making it the third-most populous county in Massachusetts.
 It is part of the Greater Boston area (the Boston–Cambridge–Newton, MA–NH Metropolitan Statistical Area).
 The largest city in Essex County is Lynn.
 The county was named after the English county of Essex.
Katesgrove is an inner-town district near the centre of the town of Reading in the English county of Berkshire and ward of the Borough of Reading, in the English county of Berkshire.
 It is bounded on the north by the Inner Distribution Road and Reading town centre, on the east by Sidmouth Street, London Road, Kendrick Road and Northumberland Avenue, on the west Coley Park and Southcote, on the south by Long Barn Lane and Rose Kiln Lane and on the west by the River Kennet.
The borough of Eastbourne, one of six local government districts in the English county of East Sussex, has around 40 extant churches and other places of worship.
 Several other former places of worship are still in existence but are no longer in religious use.
 The borough is on the English Channel coast and encompasses the town of Eastbourne and its suburbs.
 Until the late 18th century, the area was mostly farmland punctuated by four well-spread hamlets; but a fashionable seaside resort gradually developed from about 1780, based on a combination of royal patronage, a good climate, railway connections and the demands of rich visitors.
 Church-building rapidly followed; and although the town lacks the range of "worthwhile Victorian churches" found in seaside resorts such as Brighton and Bournemouth, a wide variety of architectural themes and denominations are represented.