YN-DRE-UCHA (YN-Y-DRE-UCHAF), 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, If mile (E. by S.) from Aberystwith; containing 393 inhabitants. It is bounded on the south by the river Rheidiol, and contains a portion of the village of Llanbadarn-Vawr. Here is a Sunday school, appertaining to Calvinistic Methodists, and consisting of about 100 males and females.