Mid C19. Not marked on the Tithe Map of the parish of Llanfairynghornwy, 1841, although the map is poorly annotated, not all the buildings are shown and none of the agricultural buildings are recorded. Therefore it is possibly that the range was omitted from the plan. The farm was owned by Sir Richard Williams Bulkeley, who also owned the extensive neighbouring farm at Caerau. Ty Wian was itself a large farmstead of over 96 acres(38.9 hectares), the farmer Evan Thomas.