Italo-Celtic. Within the Indo-European family, the Celtic languages have sometimes been placed with the Italic languages in a common Italo-Celtic subfamily. This hypothesis fell somewhat out of favour following reexamination by American linguist Calvert Watkins in 1966.
The language is spoken by approximately 6 million people in the Balkans, primarily in Albania, Kosovo, North Macedonia, Serbia, Montenegro and Greece. However, due to old communities in Italy and the large Albanian diaspora, the worldwide total of speakers is much higher than in Southern Europe and numbers approximately 7.5 million.