whether the tenement belongs to the lord king or the plaintiff, as where1 there is a  dispute as to boundaries in the demesnes of the lord king, then, by the order and at  the pleasure of the lord king let a perambulation be made, as [in the roll] of Michaelmas  term in the eighth and the beginning of the ninth years of king Henry in the  county of York, an assise of novel disseisin [beginning] if Roger the clerk and others,2  [where] a perambulation between the lord king and Richard of Percy was made by  twelve knights [and where four knights] afterwards made the result of that perambulation  known to the justices of the Bench.
The assise falls completely because of uncertainty.
 Because of uncertainty as to the thing in dispute an assise falls completely, changed  neither into a jury nor a perambulation, as may be seen in the case of a woman and the  warrantor of her dower before dower has been assigned. If both are ejected from the  tenement and the woman alone seeks restitution of the third part, she will not recover  by the assise, because she cannot specify her third part, because it was never identified  or assigned her. And so if the heir ejects her from the whole when he comes to  full age, she will not recover against him by the assise for the reason aforesaid, no  matter what kind of fee it is, socage or a military fee. This is made clear in the last  eyre of Martin of Pateshull in the county of Norfolk, an assise of novel disseisin [beginning]  if Gilbert son of Gilbert.3 The same may be said of others who hold in  common before partition, as co-heirs and parceners, or neighbours if they hold in  common by consent, because of a dispute, by reason of the compromise of a claim.  Hence if a stranger ejects them all, or some of them, and one alone seeks restitution  of some particular part, let him take nothing by the assise, because he cannot designate  any certain portion. But if he claims the whole, or if they all claim to be held in  common, the assise will proceed. And so if a parcener is ejected by a parcener.4 And  let the same be done with respect to other things which are held in common. 5<And  what if it is said in such a manor. It is clear that a manor may exist by itself, composed  of several edifices joined together, without6 vills and hamlets adjoining. It may  also exist by itself with several vills and hamlets adjacent, none of which may alone  be called a manor, but vills or hamlets. A manor may also exist by itself as a chief  manor and include several manors which are not chief manors, and several vills and  several hamlets, as though under one head.> The assise also falls because of uncertainty  as to the place, as to the county or vill, as above, as