Analysis of information sources in references of the Wikipedia article "Treason Act 1351" in English language version.
Statutes also are either declaratory of the common law, or remedial of some defects therein. Declaratory, where the old custom of the kingdom is almost fallen into disuse, or become disputable; in which case the parliament has thought proper, in perpetuum rei testimonium, and for avoiding all doubts and difficulties, to declare what common law is and ever hath been. Thus the statute of treasons, 25 Edw. III cap. 2 doth not make any new species of treasons; but only, for the benefit of the subject, declares and enumerates those several kinds of offence, which before were treason at common law.
