The Machvaya are a group of Roma originating from Serbia

Serbia

Serbia , officially the Republic of Serbia , is a landlocked country located at the crossroads of Central and Southeast Europe, covering the southern part of the Carpathian basin and the central part of the Balkans...

 (from Mačva

Macva

Mačva is a geographical region in Serbia, mostly situated in the northwest of Central Serbia. It is located in a fertile plain between the Sava and Drina rivers. The chief town of this region is Šabac. The modern Mačva District of Serbia is named after the region, although the region of Mačva...

). They are not an offshoot of the Kalderash Romani migration coupled with the war in the Balkans

Balkans

The Balkans is a geopolitical and cultural region of southeastern Europe...

 has meant there are an increased number of Machvaya living in other countries, specifically where there are an increased number of Serbs. Tucson, Arizona

Tucson, Arizona

Tucson is a city in and the county seat of Pima County, Arizona, United States. The city is located 118 miles southeast of Phoenix and 60 miles north of the U.S.-Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 1,020,200...

 and Hamilton, Ontario

Hamilton, Ontario

Hamilton is a port city in the Canadian province of Ontario. Conceived by George Hamilton when he purchased the Durand farm shortly after the War of 1812, Hamilton has become the centre of a densely populated and industrialized region at the west end of Lake Ontario known as the Golden Horseshoe...

 both house large numbers of Machvaya as do the USA, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

 and the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

as a whole.