TREVIRIG (TREF-FEIRIG), a township, in that part of the parish of LLANBADARNVAWR which is in the lower division of the hundred of GENEU'R-GLYN, union of ABERYSTWITH, county of CARDIGAN, SOUTH WALES; containing 633 inhabitants. It is situated contiguous to the valley of the Rheidiol. Here is a day school, in which about 40 children are instructed at the expense of their parents; also two Sunday schools, consisting of about 190 males and females, who are gratuitously taught by dissenters.