This system of land-measures was not, however, uniform, for we are told that Bleddyn, a prince of Gwynedd and Powis, altered the size of the _Tyddyn_ or smallest holding from four _Erws_ to twelve _Erws_ when held by an _Uchelwr_, eight _Erws_ when held by an _Aillt_, and four when held by a _Godaeog_ or superior _Taeog_,[229] and in the Laws of Dyved we find a still greater variety. In these laws the _Tref_ or township in the free manors is to consist of four _Randirs_, instead of sixteen as in the Laws of Gwynedd, and the Randir is to contain three hundred and twelve _Erws_, ‘so that the owner may have in the three hundred _Erws_ arable pasture and fuel wood and space for buildings on the twelve _Erws_.’ The _Erw_, however, is smaller than that in the Laws of Gwynedd, for while it is of the same breadth, viz., the long yoke of sixteen feet, it is only sixteen times as long in place of thirty. Again, in place of the _Maenawl_ containing a uniform quantity of four _Trefs_, the lowland _Maenawl_, where the land is more fertile, is to consist of seven _Trefs_, and the upland _Maenawl_ thirteen.[230] The land-measures as given in the Code of Gwent are very similar, but with some variations. There is the same direction that there are to be four _Randirs_ in the _Tref_ and three hundred and twelve _Erws_ in the _Randir_, but the _Erw_ contains eighteen rods of eighteen feet in place of sixteen yokes in the length, and there are to be thirteen _Trefs_ in every _Maenawl_, except those of the _Taeog Trefs_, which contain only seven. Of the four _Randirs_ in the free _Tref_ three are for occupancy and the fourth pasturage for the three; but in the _Taeog Tref_ there are only three _Randirs_, the third being pasturage for the other two.[231] The original rights of the free members of the tribe, on which their possession of the register land is based, are thus defined in the Triads of the Social State:—‘There are three original rights of every native Welshman (_Cymro Cynwhynawl_),—first, the possession, without restriction, of five _Erws_ of land; second, a right of determining the constitutional law of the country under protection and in right of the _Pencenedl_; and third, a right to the freedom of the country in general, that is to say, that he be free to go whither he will without loss of privilege or verdict, unless when in actual service of the country, or of a court of law.’[232]