Breton askorn

← Breton kern (cognate)

← Proto-Celtic *astkornu (inherited)

← Proto-Celtic *ast- (mention)

← Proto-Celtic *kornu (mention)

← Welsh asgwrn (cognate)

← English horn (cognate)

← Proto-Indo-European *ḱr̥nom (derived)

← Cornish askorn (cognate)

← Latin cornū (cognate)

← Old Irish corn (cognate)

← Middle Breton [[ascorn]], [[ascourn]] (inherited)

→ Welsh asgwrn (cognate)