TREVYNON, a township, in that part of the parish of LLANGORSE which is in the hundred of PENCELLY, union of BRECKNOCK and
county of BRECKNOCK, SOUTH WALES: the population is included in the return for the parish. The township, situated near the
river Llynvi, for all parochial purposes is united to the parish of Llandevailog-Tre'r-Graig: the rateable annual value is
£346.