Can some one tell me why the Irish and Scottish factions in this mod to be, aren't listed within the same culture? Considering the Dal Riada of Scotland who produced the first line of Kings in Scotland were culturally Irish because they were originally from Ulster.
Secondly, what's the Welsh-Scottish connection? And why are they the same culture?
Here's how I'd break it down. In a broad cultural sense they are all three Celtic. However linguistically, Ireland and Scotland are Gaelic (or Goidelic) and Wales is Brythonic.
In a specific cultural sense, Ireland and Scotland are culturally similar, whereas the Welsh are contrasted against the other two.
In short, if you are going to divide the Celtic nations on cultural lines, Wales should be isolated, instead of Ireland. But personally I think they should be all put in the same Celtic cultural grouping simply on the grounds that they all spoke Celtic languages at the time. Additionally, all three adhered to Celtic Christianity at the time.
It would be nice to see this addressed.