Know that we have granted to our beloved and faithful William of
Lancaster that we have every week a market at his manor of Barton on
Thursday, and that he have a fair there every year to last two days,
the vigil and the feastday of All Saints. And therefore we command you
to cause that the said William have the market and fair according to
the tenor of our charter which he has.
_Cal. Rot. Lit. Claus._ (Rec. Com.), I. 173.