There are other Greek dialects, like those spoken in Italy, which have

Surely those who speak it in Italy are Italians?

yes, since ever. The same applies to Arbereshe (albanian-speaking),
Catalans, Croatians, Cimbrians etc. and Walser. These people settled
centuries ago.

http://en.wikipedia.org/wiki/Griko_language
http://en.wikipedia.org/wiki/Calabrian_Greek_dialect
http://en.wikipedia.org/wiki/Arb%C3%ABresh%C3%AB
http://en.wikipedia.org/wiki/Molise_Croatian_dialect
http://en.wikipedia.org/wiki/Cimbrian_language
http://en.wikipedia.org/wiki/Walser

http://it.wikipedia.org/wiki/Minoran...e_%28Italia%29

I cannot find a translation for the latter page on linguistic minorities
in Italy, it includes the above cases (ancient settlements usually in
enclaves), as well as more familiar cases near recent (1860- 1918- 1945)
borders (French patois in Val d'Aosta, German in Suedtirol, Slovenian in
Friuli) plus some other local languages (the issue why those are
considered "languages" and other are considered "dialects" is sort of
fishy). It also describes a few cases of enclaves with italian dialects
from a remote part of the country with respect to the surrounding area.

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