My mother's distant cousins convinced themselves they were "real" Wallensteins, which was undoubtedly a fantasy, so it's just as well that the most talented of them ended up writing for and about Hollywood. But that's my personal link to the Thirty Years' War.
The difference between Old Spain and America, of course, is that the commercial classes were never considered authentically Spanish by the popular majority whereas they remain quintessentially American. On that I continue to base some optimism.