Conflicts & Resolutions · Treaty

Treaty of Viterbo (1267)

1267 · 13th century

The Treaty of Viterbo was concluded in May 1267 between Charles of Anjou, the deposed Latin emperor Baldwin II and William II of Villehardouin of Achaea, under the auspices of Pope Clement IV. William accepted Charles as suzerain, and his daughter Isabella married Charles's son Philip, so that Achaea passed to the Angevin kings of Naples in 1278.

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APA
The Epoch Institute. (2026). Treaty of Viterbo (1267). In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/treaty-of-viterbo-1267
MLA
“Treaty of Viterbo (1267).” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/treaty-of-viterbo-1267. Accessed .
Chicago
The Epoch Institute. “Treaty of Viterbo (1267).” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/treaty-of-viterbo-1267.
Harvard
The Epoch Institute (2026) ‘Treaty of Viterbo (1267)’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/treaty-of-viterbo-1267 (Accessed: ).

Last reviewed October 2026Random entry ↻