Where does “Gallia County” come from?

Gallia County (English) comes from Latin Gallia, from Latin -ia, from Latin -ius, from Proto-Italic -jōs, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “Gallia County”, step by step

StepLanguageWordMeaning
1LatinGalliaGaul, modern-day France; France
2Latin-iaUsed to form a feminine abstract noun, usually...
3Latin-iusforming adjectives from nouns; nominative neuter...
4Proto-Italic-jōsForms comparative adjectives
5Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European -yós →Every word from Latin -ia →Every word from Latin -ius →