Yes, it's quite routine for people to take pride in stuff they played no role in, and would even have actively worked against. They do this because they identify closely with the target of their pride, and they think something along the lines of "someone enacting values like mine" did something good.
Too often, this becomes "people like me did...", or "people who live near me did..." of even "people who live nearby 200 years ago did...". As an *emotion* this is just natural consequence of the core question: who am I? If you think of yourself as a American, mid-western, Christian... the emotion of pride is natural when another mid-westerner, American or Christian does something good.
Of course, just because one feels an emotion does not mean the core assumptions are right. That's what one needs to question: who am I?