Boniface Fadrique was a Catalan nobleman active in Central Greece as lord of Karystos from 1359 until 1365 and then as Count of Salona and owner of various other fiefs in the Duchy of Athens from 1366 until his defeat in a conflict with his nephew Louis Fadrique in the late 1370s.
[1] When Alfonso Fadrique died in 1338, Boniface inherited his mother's barony of Karystos and various other possessions across Attica.
[2][3] In 1365 however he sold his barony of Karystos with all its possessions, including serfs, to Venice, which had long coveted it, for 6,000 ducats.
[4] James Fadrique had also willed to his brother "all his rights and properties" in the Duchy of Athens, including the County of Salona with Loidoriki and Veteranitsa, but not Zetounion and Siderokastron, which passed to James' son Louis Fadrique.
[5] When James died in 1366, this left Boniface and his nephew Louis as the two most powerful lords in the Catalan domains.