The name really explains it all: Would bringing in an older culture into an off-world fantasy setting be considered "okay?" I'm mostly concerned if it'll raise a few eyebrows amongst readers. If the culture comes from similar roots, just under a different name? To be more specific, I'm hoping to use an older Irish culture, around the emigration into the U.S. Similarly, the culture stems from a grate migration south to more fertile lands after years of famine, and after settling into and immersing in the southern culture, still remembering the old roots of their ancestors. I've done my research, so there's no need to be concerned that I'm just going to use any stereotypes. I just need to know if it'll stick out enough and stall readers on the details. Your thoughts?