Where does “Луара” come from?

Луара (Russian) comes from French Loire, from Latin liger, from Gaulish liga, from Proto-Celtic legyā, from Proto-Indo-European legʰ- — to lie.

Ancestry of “Луара”, step by step

StepLanguageWordMeaning
1FrenchLoire—
2Latinligerfirst-person singular present passive subjunctive...
3Gaulishligasilt, sediment, deposit, alluvium
4Proto-Celticlegyālayer
5Proto-Indo-Europeanlegʰ-to lie
Every word from Proto-Indo-European legʰ- →Every word from Proto-Celtic legyā →Every word from Gaulish liga →