TRECASTLE, a portion (detached) of the borough of BRECENGCE; locally in the parish of LLYWEL; hundred of DEVYNOCK;
county of BRECKNOCK, SOUTH WALES; 11 miles (W. by N.) from Brecknock; containing 33 inhabitants. This place derives its
name from an ancient -castle, said to have formerly existed here; but by whom it was erected, or at what time, cannot be
clearly. ascertained; neither are there at present any vestiges of it, except an artificial mound or tumulus. on the
northern side of the turnpike-road, which is supposed to have been its site. The origin of the place is involved in great
obscurity, nor has it been satisfactorily shown by what means it became a part of the borough of Brecknock, from which it
was separated, as regards municipal jurisdiction, on the recent abridgment of the limits of that town. It is conjectured
that, having formed part of the lands of Idle Wyllt, son-in-law of Bleddyn ab Maenaroh, it fell, with the. other
territories belonging to that family, to, Bernard Newmarcsh, and thus becoming connected with Brecknock, the - head of
that baron's possessions, it continued to form part of the great lordship of Brecknock, from which it was not divided even
when,-in the reign of Henry VIII., Brecknock first became shire ground. The present small village of Tricastle seems. to
have formed the old town of Lluel, or Llywel, under which name it is frequently mentioned -in she  charter of Brecknock.
It is situated on the northern bank  of the Usk, on the high road from Brecknock to Liendovery and Milford, and consists
of a cluster-of several-houses, among which is a good impend posting. house, from which it derives all the little
importance it possesses.  .Fairs.are held on January,17th, April 5th, May 21st, August 14th, November 13th, and December
14th.