The principle of each man becoming responsible to the Government for the good behaviour of the neighbour, involved in the system of frankpledge which Alfred established throughout the whole of his kingdom, subject to his rule, was carried a step further by the citizens of London at a later date. Under Athelstan (A.D. 925-940) we find them banding together and forming an association for mutual defence of life and property, and thus assisting the executive in the maintenance of law and order. A complete code of ordinances, regulating this "frith" or peace gild, as it was called, drawn up by the bishops and reeves of the burgh, and confirmed by the members on oath, is still preserved to us.(32)
The enactments are chiefly directed against thieves, the measures to be taken to bring them to justice, and the penalties to be imposed on them, the formation of a common fund for the pursuit of thieves, and for making good to members any loss they may have sustained. So far, the gild undertook duties of a public character, such as are found incorporated among other laws of the kingdom, but it had, incidentally, also its social and religious side. When the ruling members met in their gild-hall,(33) which they did once a month, "if they could and had leisure," they enjoyed a refection with ale-drinking or "byt-filling."
Some writers see in the "frith-gild" of Athelstan's day, nothing more than a mere "friendly society," meeting together once a month, to drink their beer and consult about matters of mutual insurance and other topics of more or less social and religious character.(34) But there is evidence to show that the tie which united members of a "frith-gild" was stronger and more solemn than any which binds the members of a friendly society or voluntary association. The punishment of one who was guilty of breaking his "frith" was practically banishment or death. Such a one, in Athelstan's time, was ordered to abjure the country, which probably meant no more than that he was to leave his burgh or perhaps the shire in which he dwelt, but if ever he returned, he might be treated as a thief taken "hand-habbende" or one taken with stolen goods upon him, in other words, "with the mainour."(35) A thief so taken might lawfully be killed by the first man who met him, and the slayer was, according to the code of the "frith-gild," "to be twelve pence the better for the deed."(36) Under these circumstances, it is more reasonable to suppose, that the "frith-gild" was not so much a voluntary association as one imposed upon members of the community by some public authority.(37)