Where does “Lyons” come from?

Lyons (French) comes from Latin Lugdunum, from Gaulish Lugudūnon, from Proto-Celtic Lugus — the god {{w|Lugus}}.

Ancestry of “Lyons”, step by step

Step	Language	Word	Meaning
1	Latin	Lugdunum	fort of Lug
2	Gaulish	Lugudūnon	—
3	Proto-Celtic	Lugus	the god {{w\|Lugus}}

Lyons — Etymology, Origin & Word History | Etymology Explorer