Welsh alarch

← Proto-Brythonic *alarkos (inherited)

← Proto-Celtic *eli- (inherited)

← Irish eala (cognate)

← Old Swedish ala (cognate)

← Old Swedish alla (mention)

← Proto-Indo-European *h₁el- (inherited)

← Latin olor (cognate)

→ English auk (cognate)

→ Irish eala (cognate)