Yes, it does help that I understand why Welsh people are the way they are toward English people. It... doesn't seem very logical to many people (particularly the Saeson), given that we've been a conquered country, one way or the other, for hundreds of years, and haven't even had a prince of our own blood since Llywelyn the Last in the 1200s! But at times I feel much the same way as Bran does about Wales (less so, because I was raised in England), so that part of his character is very easy to write.