Cognomen ウェルシュ (Welsh 
, Welsch , ウェルシュ) , all around the world, is a common last name. The last name ウェルシュ is habitual in Grenada, where it is quite a common surname, Guernsey, and New Zealand (explore the name in all countries). In absolute terms, the name is most common in the United States, the United Kingdom, and Germany.