It now seems that it is far older than previously thought and is now regarded as the 2nd oldest medieval building in Conwy town (Aberconwy House being the first). It has been the subject of a Dendro-Chronology (counting tree rings) lab test and its timbers have been dated as felled in 1441/2 when it was an urban 2 bay open hall house with jointed crucks. The conversion into a stone walled hearth-passage vicarage by Vicar John Brickdall was dated 1589. It therefore has national importance.
Given this news, isn't it about time that CCBC took a far firmer line with the Owner that has left it to languish in a state of near dereliction? The same owner that wanted to install three en-suite bathrooms and demolish part of the building to build a car port, if my memory serves me correctly! I think its Listing should also be upped to Grade I and it was given a more sympathetic owner willing to treat it with the care its age demands..
The original article about the history of the Black Lion can be viewed here.