The dozen "pairs" played a role in the royal "sacre" or consecration, during the liturgy of the coronation of the king, attested to as early as 1179, symbolically upholding his crown, and each original peer had a specific role, often with an attribute. Since the peers were never twelve during the coronation in early periods, due to the fact that most lay peerages were forfeited to or merged in the crown, delegates were chosen by the king, mainly from the princes of the blood. In later periods peers also held up by poles a baldaquin or cloth of honour over the king during much of the ceremony.