Where does “cassanagh” come from?

cassanagh (Manx) comes from Manx cassan, from Middle Irish casán, from Middle Irish -án, from Old Irish -án, from Primitive Irish -ᚐᚌᚅᚔ, from Proto-Celtic *-agnos.

cassanagh (Manx): passable; paved

Definitions

passable; paved

Ancestry of “cassanagh”, step by step

Step	Language	Word	Meaning
1	Manx	cassan	path; trajectory; sidewalk
2	Middle Irish	casán	path, footpath; fastener or ornament for a cloak
3	Middle Irish	-án	diminutive suffix
4	Old Irish	-án	diminutive suffix
5	Primitive Irish	-ᚐᚌᚅᚔ	diminutive suffix
6	Proto-Celtic	*-agnos	—

Every word from Proto-Celtic *-agnos →Every word from Old Irish -án →Every word from Middle Irish -án →