This article analyzes the discourse of historical legitimacy in the duchy of Schleswig and in the Slovenian-speaking regions of Carniola, Styria, and especially Carinthia in the nineteenth and twentieth centuries. The question as to who had arrived in the area first was never far from the surface, because in an era of national romanticism, duration of stay seemed to allot special claims to possession. Rather than challenging this rationale, all sides tended to focus their efforts on enhancing their local genealogy. Yet the national conflicts of the period were not about political and linguistic history, but about contemporary interests and identities. In both Jutland and the southeastern Alps, national movements tended to focus on select moments in time that corresponded most closely to their modern-day political aspirations. The comparative analysis of two otherwise fairly divergent European regions reveals the pragmatic similarities of historical nation-building.