Where does “Brittany” come from?

Brittany comes from Latin Brittania, a name of uncertain ultimate origin whose meaning is not established.

Ancestry of “Brittany”, step by step

Step	Language	Word	Meaning
1	Latin	Brittania	Britain
2	Ancient Greek	Βρεττανία	—
3	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
4	Proto-Indo-European	-íh₂	—
5	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Brittany — Etymology, Origin & Word History | Etymology Explorer