A TOUR ROUND NORTH WALES. 99 



Diferth Caftle,* which was, molt proba- 

 bly, the laft of the chain of Britifti pofts on 

 the Clwydian hills, was formerly called alfo 



Din-colyn, Caftell y 



Ffailon, Caftell Gerri, 



and Caftell y Craig, 



the Caftle of the Rock.^- The time of its 

 foundation is not known. It was fortified 

 by Henry III. about 1241,$ and it appears 

 to have been the property of the Earls of 

 Chefter, for Dugdale, at the end of his ac- 



* " Thifarte, or Difarte Caftelle, yn Flintfliire, 

 " by the name yn Walfche is thus expounded : 

 " Thi is privativa particuldy as not; farte isjteepe up; 

 *' notftepc or dining up, that is to fay, playne." See 

 Iceland's Itln. V. 53. 



I fhould rather fuppofe it derived from dy very, 

 and ferth f fteep, as it does not ftand upon a plain> 

 but upon a considerable eminence. 



t Pennant, II. 7, who quotes Llwyd's Itinerary, 

 MSS. 



| Powel, 307. 



H 2 count 



