Syllan ew enesek 28 mildir (45 kilometer) soth-west a Gernow. Ma pemp enys poblys hag a-dro dhe 140 enys vian heb poblans. An enesow gen poblans ew Enor, war neb man brassa cita Hoe, Enys Scaw, Breghyek, Aganas ha Breyer. Ma dhen enesek poblans a neb 2,100, gen hanter an dus ow bos trigys en cita chyf Hoe.