Where does “Cavan” come from?

Cavan is an English place name derived from Irish Cabhán, from Old Irish cobfán, of uncertain ultimate origin.

Ancestry of “Cavan”, step by step

Step	Language	Word	Meaning
1	Persian	جوان	young; youthful; youth
2	Middle Persian	yw'n	—
3	Proto-Iranian	HyúHā	youthful, young
4	Proto-Indo-Iranian	HyúHā	youthful, young
5	Proto-Indo-European	h₂yéwHō	young
6	Proto-Indo-European	h₂óyu	long time, lifetime
7	Proto-Indo-European	h₂ey-	vital force, life, age, eternity; day, morning

Cavan — Etymology, Origin & Word History | Etymology Explorer