The Cochrane coat of arms The Cochrane’s (or Cochran’s) are of Irish descent. Their coat of arms a chevron between 3 boars’ heads. Their motto was Virtute et Labore (by virtue and labor). The shield is silver and the chevron red. The boars heads are blue (although they look green here due to age). The wreath alternates twists of silver and red. The passant horse is of gold.