Irish Travellers

From Wikipedia:
Irish Travellers (Irish: an lucht siúil) or Pavee are a traditionally nomadic people of ethnic Irish origin, who maintain a separate language and set of traditions. They live predominantly in the Republic of Ireland, the United Kingdom and the United States.

Travellers refer to themselves as Minceir or Pavees in their own language or in Irish as an Lucht Siúil, meaning literally "the walking people".

Travellers are often referred to by the terms gypsies, didicoy, tinkers or knackers. Some of these terms refer to services that were traditionally provided by them, tinkering (or tinsmithing), for example, being the mending of tinware such as pots and pans, and knackering, being the acquisition of dead or old horses for slaughter. Tinker is used as a pejorative against travellers.