Binchy (D. A.): Some Celtic legal terms.

In Celtica 3. 1956, pp. 221–31.

Collocation of W. and Ir. evidence about two ancient institutions:
1. The heir to the throne (W. gwrthrychiad, edlyg, segynnab, eil; Lat. secundarius (Asser). Ir. *frescissid (?), tánaise, secndap).
2. The officium pietatis (W. gwar, mab anwar, gwaredd : Ir. macc gor, m. ingor, goire).