Where does “Senones” come from?

Senones (English) comes from Latin Senones, from Ancient Greek Σένονες, from Gaulish Senōnēs, from Proto-Celtic senos, from Proto-Indo-European sénos — old.

Senones (English): A Gaulish tribe in the Roman period

Definitions

A Gaulish tribe in the Roman period

Ancestry of “Senones”, step by step

Step	Language	Word	Meaning
1	Latin	Senones	a Gaulish tribe
2	Ancient Greek	Σένονες	—
3	Gaulish	Senōnēs	—
4	Proto-Celtic	senos	old
5	Proto-Indo-European	sénos	old

Every word from Proto-Indo-European sénos →Every word from Proto-Celtic senos →Every word from Gaulish Senōnēs →