 Following the fall of Constantinople (1453), and thanks to the intercession of Michael Critobulus, Sultan Mehmed II recognized Dorino I Gattilusio's possession of Lemnos and Thasos in exchange for an annual tribute of 2,325 gold coins.When Dorino died in 1455, his son and successor Domenico was only granted Lemnos, however.In 1456, Mehmed II attacked and captured the Gattilusi domains in Thrace (Ainos and the islands of Samothrace and Imbros).