In form it was simply an injunction on a plaint. When for some reason right could not be obtained by the means afforded by the common law, the injured party had to apply to the king by petition. One of the most common cases was when redress was sought for some act of the king himself or of his officers, when the consequent injunction to the common law courts or to the Exchequer to examine the case invariably began with the identical formula which gave its name to the writ by which privileged villains complained of an increase of services; _monstravit_ or _monstraverunt N.N._; _ex parte N.N. ostensum est_:--these are the opening words of the king's injunctions consequent upon the humble remonstrations of his aggrieved subjects[185]. Again, we find that the application for the writ by privileged villains is actually described as a plaint[186]. In some cases it would be difficult to tell on the face of the initiatory document, whether we have to do with a '_breve de monstraverunt_' to coerce the manorial lord, or with an extraordinary measure taken by the king with a view to settling his own interests[187]. [The 'Monstraverunt' on the king's own land.] And this brings me to the main point. Although the writ under discussion seems at first sight to meet the requirement of the special case of manors alienated from the crown, on closer inspection it turns out to be a variation of the peculiar process employed to insist upon a right against the crown. Parallel to the 'Monstraverunt' against a lord in the Common Pleas we have the 'Monstraverunt' against the king's bailiff in the Exchequer. The following mandate for instance is enrolled in the eventful year 1265: 'Monstraverunt Regi homines castri sui de Brambur et Schotone quod Henricus Spring constabularius castri de Brambur injuste distringit eos ad faciendum alia servicia et alias consuetudines quam facere consueverunt temporibus predecessorum Regis et tempore suo. Ideo mandatum est vicecomiti quod venire etc. predictum Henricum a die Pasche in xv dies ad respondendum Regi et predictis hominibus de predicta terra et breve etc.'[188] There is not much to choose between this and the enrolment of a 'breve de monstraverunt' in the usual sense beyond the fact that it is entered on a Roll of Exchequer Memoranda. In 1292 a mandate of King Edward I to the Barons of the Exchequer is entered in behalf of the men of Costeseye in Norfolk who complained of divers grievances against Athelwald of Crea, the bailiff of the manor. The petition itself is enrolled also, and it sets forth, that whereas the poor men of the king of the base tenure in the manor of Costeseye held by certain usages, from a time of which memory runs no higher, as well under the counts of Brittany as under the kings to whom the manor was forfeited, now bailiff Athelwald distrains them to do other services which ought to be performed by pure villains. They could sell and lease