Pen-y-cae is a village and community in Wrexham County Borough, Wales. The population of the community taken at the 2011 census was 3,389. It adjoins the larger village of Rhosllanerchrugog. Pen-y-cae means 'head of the field' or 'end of the field'. Although often written as one word without hyphens, in its correct form the name is hyphenised due to th…Pen-y-cae is a village and community in Wrexham County Borough, Wales. The population of the community taken at the 2011 census was 3,389. It adjoins the larger village of Rhosllanerchrugog. Pen-y-cae means 'head of the field' or 'end of the field'. Although often written as one word without hyphens, in its correct form the name is hyphenised due to the definite article 'y' preceding a single-syllable element.