Various other (especially more minor) European languages.
Overview of Celtic languages at Omniglot.com
Comparison of Celtic languages at Omniglot.com
Welsh (Cymraeg) overview at Omniglot
Historical forms of Welsh:
Old Welsh (Hen Gymraeg, 8th-12th century)
Middle Welsh (Cymraeg Canol, 12th-15th/16th century)
Medieval Baltic names - Lists known medieval names from the east Baltic coast, in various local languages and dialects.
General overview of Ancient Greek dialects
General overview of Modern Greek dialects
Ancient Greek names - Lists known ancient names from Greek antiquity.
Late Greek names - Lists known ancient and medieval names from late antiquity and early medieval Greek (Byzantine Greek).
Ingrian/Izhorian
Karelian
Livonian
General overview (extinct since 2013, survives via revival)
Ludic
Veps/Vepsian
Votic/Votian
Jewish languages and dialects used in Europe, including hybrid Hebrew-Indoeuropean language dialects.
La'az/Ebraico-Latino (Judeo-Latin) (Rome and Italy; extinct)
Italkian (Judeo-Italian) (Italian speaking lands; extant but marginal)
Italkian (Judeo-Italian) given names
Shuadit (Judeo-Occitan/Judeo-Provençal) (Occitan-speaking regions; extinct)
Shuadit (Judeo-Occitan/Judeo-Provençal) given names
Ladino (Judeo-Spanish) (Spanish-speaking Europe; extant)
Knaanic (Judeo-Czech; used in the Czech lands; extinct)
Yevanic (Judeo-Hellenic; used in Greece and the eastern Mediterranean; extant but marginal)
European languages with a different ancestry than Indoeuropean or Ugrofinnic.
Medieval Basque names - Lists known medieval names from various Basque dialects.
Other language help articles:
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