Man of Honour
One of the characteristics of a nation though is the language (nation and country are not the same thing imho), if its true Gaelic was the language Scots used to speak then you're more Irish than British , i think so.
There's certainly close links between Scotland and Ireland, not just in a linguistic sense but to take the language alone and say that makes the Scottish more Irish than British isn't an argument that I find convincing. The British are a mongrel nation who have lineage spread through centuries worth of incomers (both hostile and peaceful) so picking on one specific seems a little odd.