Cloch y Pibwr, [519].

Clochán na bh-Fomhorach, [433].

Clodd, Mr., [584], [585], [593], [598], [607], [628].

Clogwyn Du, [476], [477].

— y Gwin, 50.

cluain, [513].

Clun Hir, 22, [513].

— Kein, [513].

Clutorig-i, [535].

Clwch Dernog, [457], [568]: see Cnwch D.