Richard Williams makes the claim that Cilthriew and the neighbouring house of Brynllywarch (which was also a township) were in the ownership of the Pugh (ap[clarification needed] Hugh) family from at least 1500.

[6] This resulted in the Brynllywarch and Cilthriew estates, which then consisted of 27 farms, being sold in 1839 to Richard Leyland (Bullin), a very wealthy banker from Liverpool.

A porch on the NW side suggests that this was a standard ‘‘lobby-entrance’’ house and there is a large rectangular stone chimney stack which is placed directly in front of the entrance, originally forming a lobby.

Peter Smith in Houses of the Welsh Countryside has mapped the occurrence of these chimney stacks (including Cilthriew), which are distributed mainly in North West Wales, along the border with England.

At the N E in the angle between the timber framed house and the stone wing is a slightly sunken room, described as a ‘’cellar’’, but almost certainly a dairy, as it would have been ideal for cooling milk.

This has been done in a ‘‘Tudoresque ‘’ or Jacobethan style and must be contemporary with the carved bargeboards on the gables and shaped brackets on either side of an upper chamber window on the timber framed section.