He ought also to produce without aid of the court those who are within his own  potestas, though they reside within the realm and are within the king's coercive power,  as his wife and children and others whom he may command.1 Suppose that a tenant  impleaded in England vouches a warrantor resident in Ireland or in Wales, within the  king's potestas and where his writs run, [may he do] this by aid of the court? It is submitted  that aid ought to be given him, and that the principal plea ought to remain in  suspense and sine die until the plea of warranty has been determined in Ireland, and  let the tenant sue the plea of warranty or lose by default. Let the lord king's writ to  his justices in Ireland be drawn in this form.
If one impleaded in England has vouched a warrantor resident in Ireland.
 The king to his beloved and faithful such a one, justice of Ireland, greeting. Know  that when A. in our court before our justices at Westminster claimed against B. so  much land etc. as his right, the same B. came into the same court before etc. and said  that he held that land of the gift of C. (or of some ancestor of the same C. whose heir  that C. is) by his charter which he there produced, and vouched the said C. to warranty  thereof against the same A. by aid of our same court. And because the same C.  is resident in Ireland under our potestas and has no land in England [by which] he can  be summoned and distrained, we order you to cause the said C. to be summoned, at a  certain day and place as you deem expedient, to warrant the said land to the said B.  or show why he is not obliged to warrant, and transmit to us without delay by your  sealed letters the record of that plea concerning the said warranty, according as it was  pursued before you. And return to us this writ together with the record. And if the  said C. ought to warrant, give him a day before us to hear the record and his judgment  with respect to the said warranty and to answer the same A. in the principal plea.  Witness etc.
If the warrantor does not come and defend his tenant.
 If C. does not come to England and defend his tenant against A., A. will recover the  land sought against B. and B. will have escambium to the value from C.'s land in  Ireland. If2 C. comes to England and defends B. against A., B. will hold in peace and  C. will be quit of escambium. But suppose that when C. has warranted in England he