To illustrate the operation of the ‘tribal wergeld’ system, we naturally turn, in the first place, to the Germans of pre-Christian days. Tacitus says[21] of them: ‘It is an indispensable duty to adopt the private enmities of a father or a relative ... these, however, are not irreconcilable and perpetual. Even homicide is atoned for by a fixed number of cattle and sheep and the whole House accepts the satisfaction, to the benefit of the civic group.’ Tacitus is obviously astonished at this system of compensation for homicide. The Romans, like the Germans, were familiar with the organisation of the clan, and of the tribe, but Roman law, as far back as we can trace it, did not permit wergeld. In Rome,[22] from 450 B.C. onwards, the expiation of the insult which the homicide offered to the State and its gods had driven from view, and had therefore probably abolished, the material compensation of the clan. The chief detail of interest which Tacitus gives us is the collective acceptance of satisfaction by a whole House or Family. From other sources, which we shall presently discuss, we may infer that the House in this instance was a very large unit, including not merely the closer kindred which traced descent to a common living (or lately deceased) ancestor, but that wider group of kinsmen which is called the clan. We note also, in Tacitus’ account, a reference to a fixed number of cattle and sheep. Who was it that fixed the number? Who was it that paid? To answer these questions we shall cite some details of Welsh wergeld payments which have been admirably collected and explained by Mr. F. Seebohm.[23]