Where does “Gaillard” come from?

Gaillard (English) comes from French Gaillard, from Old French gaillart, from Lithuanian galia, 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 “Gaillard”, step by step

StepLanguageWordMeaning
1FrenchGaillardGaillard: often associated with the Huguenots
2Old Frenchgaillart
3Lithuaniangaliapower, might
4LatinGalliaGaul, modern-day France; France
5Latin-iaUsed to form a feminine abstract noun, usually...
6Latin-iusforming adjectives from nouns; nominative neuter...
7Proto-Italic-jōsForms comparative adjectives
8Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European -yósEvery word from Latin -iaEvery word from Latin -ius