Loyalty - Bond of Heart and Deed
Loyalty to kin, lord, and sworn companions is unbreakable.
Celtic society was bound by webs of loyalty - to family, to fostered kin, to lords who had received service, to companions who had shared danger. Breaking these bonds was the ultimate dishonor. Loyalty was tested and proven through action.
A man is measured by those who stand beside him when all others flee.
Loyalty networks structured all aspects of Celtic political and social life.
Irish Sagas