Obs. [a. Fr. combourgeoisie, f. combourgeois COMBURGESS.] A league or alliance of mutual citizenship between independent cities; comburghership: used particularly of Switzerland.

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1602.  Fulbecke, Pandects, 55. So the Athenians did make free of their citie … all the Rhodians: which the Rhodians requited with like curtesie, which was nothing else but a comburgeosie, such as Bodinus reporteth to haue been made betwixt them of Valoys, and certaine towneships of the Heluetians.

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1707.  Lond. Gaz., No. 4350/3. Our strict Alliances and Combourgeoisy with that Principality. Ibid., No. 4393/1. Contained in the Treaty of Combourgeoisy between Berne and Neufchatel.

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