Where does “Feardorcha” come from?

Feardorcha (Irish) comes from Irish féar, from Old Irish fér, from Primitive Irish ᚃᚔᚏᚐᚄ, from Proto-Celtic wiros, from Proto-Indo-European wiHrós, from Proto-Indo-European weyh₁- — to chase, pursue; to suppress, persecute.

Feardorcha (Irish): historically anglicized as Frederick, to which it is etymologically unrelated

Definitions

historically anglicized as Frederick, to which it is etymologically unrelated

Ancestry of “Feardorcha”, step by step

Feardorcha traces back through two separate lines of ancestry.

via Irish féar

Step	Language	Word	Meaning
1	Irish	féar	grass; marijuana
2	Old Irish	fér	grass
3	Primitive Irish	ᚃᚔᚏᚐᚄ	man
4	Proto-Celtic	wiros	man; husband
5	Proto-Indo-European	wiHrós	man; husband; warrior, hero
6	Proto-Indo-European	weyh₁-	to chase, pursue; to suppress, persecute

via Irish dorcha

Step	Language	Word	Meaning
1	Irish	dorcha	dark; hidden, secret, mysterious; shy
2	Old Irish	dorchae	dark, gloomy; obscure; gloomy, morose

Every word from Proto-Indo-European weyh₁- →Every word from Proto-Indo-European wiHrós →Every word from Proto-Celtic wiros →