Welsh march

← Proto-Brythonic *marx (inherited)

← Proto-Celtic *markos (inherited)

→ Old English mearh (cognate)

→ Welsh morfarch (compound)

→ Welsh marchog (affix)

→ Welsh dynfarch (compound)

→ Welsh afonfarch (affix)

→ Welsh dyfrfarch (affix)

→ Welsh marchgacwn (compound)

→ Irish marc (cognate)

→ Old Irish marc (cognate)