Nationality 

This is a complex subject. Looking at the definition of nationality on the wiki page, it opens with the line "Nationality is the legal relationship between a person and a state", which taken at face value would of course make Nicola Sturgeon's nationality British (just as it is the nationality of Ruth Davidson or Kezia Dugdale), with no possibility of it being Scottish since Scotland does not exist as an independent state, and being born in the UK prior to 1983 conferred British nationality (at least in the legal sense). 

In previous (rather thinly commented) discussions around SNP politicians, however, the preferred definition has instead been how people see themselves or are assumed to see themselves based on party membership. Is this really a good definition? Particularly given that there is often no actual citation given for these people seeing themselves in terms of actual nationality as Scottish only? 

When this was discussed in relation to Gerry Adams, the case for his Irish nationality rested on the fact that he has an Irish passport. Obviously in the case of Nicola Sturgeon no such passport exists. What's the real justification for giving her nationality exclusively as Scottish?