Here frankpledge is not associated with a tithing system, per se, but applies essentially the same concept in requiring those outside the tithing system to find guarantors of behaviour. Those guarantors would be subject to a fine if the person for whom they vouched failed to appear in court to answer an accusation, so care was taken in legal records to note the names of guarantors. It was the responsibility of the alderman to know of anyone staying in his ward who was not in frankpledge, and the responsibility of ward residents to report such individuals to the alderman; if judicial satisfaction could not be obtained from a defaulting defendant without guarantors, the alderman and the whole ward could be fined. The period of three nights was to distinguish persons staying in London from those passing through; certain groups exempt from finding guarantors were identified in an ordinance made as a result of the 1244 eyre: merchants from outside the city; travellers; household servants of magnates, come to buy provisions or conduct business for their masters; and persons involved in cases before the king's court.