Othon de Cicon was a Frankish noble and baron of Karystos on the island of Euboea (Negroponte) in medieval Greece.
[3][4] In the War of the Euboeote Succession, he sided with the Prince of Achaea William II of Villehardouin, and armed a galley to support him.
[3][5] In 1261, following the recovery of Constantinople by the Byzantine Greeks of the Empire of Nicaea, the fugitive Latin Emperor Baldwin II arrived at Euboea.
There Othon loaned him 5,000 gold hyperpyra, which Baldwin later repaid by, among others, giving him the right arm of Saint John the Baptist, with which Jesus Christ was baptized.
[7] He appears to have been married to Agnese Ghisi, sister (or half-sister) of Geremia and Andrea Ghisi, and had at least one son, Guidotto, who was taken prisoner by Licario, a renegade Italian in Byzantine service, when the latter captured Karystos in ca.