Where does “Амьен” come from?

Амьен (Russian) comes from French Amiens, from Middle French Amiens, from Old French Amiens, from Latin Ambianum, from Latin Ambiani, from Gaulish ambe, from Proto-Celtic abū, from Proto-Indo-European h₂ep- — water, body of water.

Ancestry of “Амьен”, step by step

StepLanguageWordMeaning
1FrenchAmiens—
2Middle FrenchAmiens—
3Old FrenchAmiens—
4LatinAmbianum—
5LatinAmbianiCeltic tribe in northern Gaul
6Gaulishambewater, river; river
7Proto-Celticabūriver
8Proto-Indo-Europeanh₂ep-water, body of water
Every word from Proto-Indo-European h₂ep- →Every word from Proto-Celtic abū →Every word from Gaulish ambe →