:I don't tell you anything. I'm fine with either one, whichever is more correct. If Guipuscoa is a consolidated English term then it should be that, else, it should be Gipuzkoa (being the official name) - at least that's my opinion (I never read Guipuscoa before but I'm not a native english speaker, you know). Whatever the case this should probably discussed in the article and/or in the proposed guideline talk page. That's why I mentioned the issue.  
 :These things are somewhat delicate and that's why I'm trying to create a policy that will define the best usage. By the moment it's in discussion phase and it will take some time (months, I guess) to reach a consensus, after everybody interested has participated.