Question: What country of origin does Adeyfield and Hemel Hempstead have in common?

Context articles: Adeyfield
Hemel Hempstead
Hemel Hempstead railway station
Hemel Storm
Adeyfield School
Hemel Hempstead Swimming Club
Bennetts End
Roughdown Common
Gadebridge
Colin Bateman (footballer)

Adeyfield was the first planned neighbourhood to be built in the postwar new town expansion of Hemel Hempstead, in the English county of Hertfordshire.
 The keys to the first houses to be occupied, in Homefield Road, were handed over to their tenants in February 1950.
 The Queens Square shopping parade was visited by Queen Elizabeth II on 20 July 1952, to lay the first foundation slab of St. Barnabas Church.
Hemel Hempstead is a new town in Hertfordshire, England.
 Located 24 mi northwest of London, it is part of the Greater London Urban Area.
 The population according to the 2001 Census was 81,143, and at the 2011 census was 94,932.
Hemel Hempstead railway station is on the West Coast Main Line, on the western edge of the town of Hemel Hempstead, Hertfordshire, England.
 The station is 24+1/2 mi north-west of London Euston on the West Coast Main Line.
 Hemel Hempstead is managed by London Midland and all train services are operated by London Midland and Southern.
The Hemel Storm are a basketball team currently competing in Division 1 of the English National Basketball League.
 The team is based in Hemel Hempstead, Hertfordshire and play their home games in the Hemel Hempstead Sportspace facility.
 Over their short history, the club has been based in several locations across Hertfordshire and North London, before settling into their current, long-term home in 2010.
Adeyfield School is a secondary school and sixth form located in Adeyfield, Hemel Hempstead, Hertfordshire.
 There are approximately 800 students on roll at the school.
Hemel Hempstead Swimming Club is a swimming club based in Hemel Hempstead, Hertfordshire, United Kingdom and was established in 1913.
 Hemel Hempstead Swimming Club (HHSC) ranks as one of Hertfordshire's premier clubs.
 The Club has in excess of 220 members from age 5 to Masters Level and their swimmers compete regularly in a wide range of competitions.
Bennetts End is a neighbourhood within Hemel Hempstead in Hertfordshire, England.
 It is located in the southeast of the town and consists almost entirely of public housing built as part of the new town in the 1950s.
 It was the second neighbourhood to have construction commenced by the New Town corporation, after the nearby Adeyfield.
Roughdown Common is a 3.6 hectare biological Site of Special Scientific Interest in Hemel Hempstead in Hertfordshire.
 The planning authority is Dacorum Borough Council.
 The site is Common land, and it is owned by the Box Moor Trust having been officially brought by the trust in April 1886 from the Dean and Chapter of St Paul's.
 It is part of the Chilterns Area of Outstanding Natural Beauty.
 The Common is a steeply sloping chalk hill in south Hemel Hempstead.
Gadebridge is a district of Hemel Hempstead in Hertfordshire, UK, located north west of Hemel Hempstead old town.
 It was developed from land that once formed part of Gadebridge House in the 1960s and centres on the Rossgate shopping parade.
 Gadebridge Park is the largest green space in Hemel Hempstead.
 A major Roman villa was discovered here at the time of its development (Gadebridge Park Roman Villa).
 The population of the Dacorum ward (including Piccotts End) at the 2011 Census was 5,655.
Colin Bateman (born 22 October 1930 in Hemel Hempstead) is an English former professional footballer who played in the Football League as a full back for Watford.
 He joined the club from Hemel Hempstead in 1953 and made 50 league appearances between the 1954–55 and 1957–58 seasons, before returning to non-league football with Sittingbourne.