Inter-Urban Alliances and the Archives of Legitimacy in the Southern Low Countries, 1250–1450

By the thirteenth century, confederations of communes in western Europe were claiming important legal, political and military prerogatives for themselves in written charters of inter-urban alliance. Scholars have seen these alliances as a tool of the emerging economic elite or as forces of resistance to the sovereign territorial state taking shape in the late Middle Ages. To understand alternatives to princely polity formation in the wealthy, urbanized regions of Brabant, Flanders and Liège, however, this article studies urban alliances as a power in their own right by examining how new documentary practices contributed to older traditions of inter-urban collaboration. Towns and their coalitions created and distributed bilateral, multilateral and hybrid or concentric charters of alliance and kept them in their own archives, which they saw as repositories of legal security and authority. Meanwhile, archivists, chancellors and other technicians of legitimacy helped princes to consolidate legal superiority over their supposedly subject towns by spearheading the confiscation and destruction of communal archives, in particular their charters of alliance. They thus obscured the scale of inter-urban solidarity: this article reports fifty-eight unique alliances preserved in over 200 charters between 1219 and 1444 across these three regions.