The struggle, however, in behalf of the common law was not at an end. It is more than probable that the petitions against encroachments of Chancery, which fill the rolls under Henry IV., Henry V., and in the minority of Henry VI., emanated from that numerous and jealous body whose interests as well as prejudices were so deeply affected. Certain it is that the commons, though now acknowledging an equitable jurisdiction, or rather one more extensive than is understood by the word "equitable," in the greatest judicial officer of the crown, did not cease to remonstrate against his transgression of these boundaries. They succeeded so far, in 1436, as to obtain a statute (15 Hen. VI. c. 4) in these words:--"For that divers persons have before this time been greatly vexed and grieved by writs of _subpoena_, purchased for matters determinable by the common law of this land, to the great damage of such persons so vexed, in suspension and impediment of the common law as aforesaid; Our lord the king doth command that the statutes thereof made shall be duly observed, according to the form and effect of the same, and that no writ of _subpoena_ be granted from henceforth until surety be found to satisfy the party so grieved and vexed for his damages and expenses, if so be that the matter cannot be made good which is contained in the bill." It was the intention of the commons, as appears by the preamble of this statute, and more fully by their petition in Rot. Parl. (iv. 101), that the matters contained in the bill on which the _subpoena_ was issued should be not only true in themselves, but such as could not be determined at common law. But the king's answer appears rather equivocal.