"A YEAR AND A DAY" 299 who dwells in [the borough] for a year and a day, at all events if he has become a burgess or a member of the merchant guild, becomes free, or at least cannot be claimed by his Lord so long as he remains within the borough."1 This guarded statement is necessary, for the actual position is uncertain, and it may well be that for a considerable time it was constantly changing. Not every city or borough was a chartered town or royal demesne, and without such a status the town could afford the serf but little protection. The widest claim is to be found in the laws called Willelmi Articuli Retractati, where it is stated, " If slaves (servi) have remained a year and a day without being claimed, in our cities or in our walled boroughs or in our castles, from that day they shall become free men and shall remain for ever free from the yoke of slavery".2 These laws, however, do not date in their present form from the time of the Conqueror, although no doubt they are expanded from some earlier enactments. As we now have them they appear to be written after izoo,3 but before that date we have much evidence which modifies their force. Glanvill, in a well-known passage, says that the serf who dwells in a privileged town without challenge for a year and a day, "so that he shall have been re- ceived like a citizen into their common gild, he will be liberated from serfdom by that very fact".4 It will be noted that it is not mere residence, but reception in the gild that is the essence of this case. And this insistence on something more than residence is to be noticed in the charters which the towns were acquiring from the twelfth century onward. Thus at Newcastle, the town charter, which dates before 1135, insists that the serf (rtisticus) must stay his year and a day, as a burgess (sicut burgen$is)\ or, as another charter at Lincoln (1157) has it, "he is free if he dwells a year and a day and pays the customs of the city". At Northamp- ton, in 1190, the custom was shown to require the would-be citizen to be resident and at hearth and home and lot and scot with the citizens for a year and a day, and similar laws obtained at Dunwich and Hereford in 1215. Furthermore, a careful ex- 1 Pollock and Maitland, op. cit. I, 648. 2 A. J. Robertson, Laws of Kings of England from Edmund to Henry I, cap. 16. 8 Liebermann, Gesetze der Angelsachsen, in, 278, 4 Glanvill, op. cit. Bk. v, cap. 5.