Old Irish derg

← Old English deorc (cognate)

← Proto-Celtic *dergos (inherited)

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

← Tocharian B tarkär (cognate)

← Tocharian A tärkär (cognate)

→ Irish dearg (inherited)

→ Scottish Gaelic dearg (inherited)

→ Manx jiarg (inherited)

→ Manx jargan (mention)

→ Tocharian B tarkär (cognate)

→ Tocharian A tärkär (cognate)