Fernão Nunes, also known as Fernao Nuniz, was a Portuguese-Jewish traveler, chronicler and horse trader who spent three years in Vijayanagara, the capital of the Vijayanagara Empire in the time period 1535-1537. His writings have brought to light many interesting details about Vijayanagara at that time, including construction of massive fortification works, watch towers and security walls. From his notes it is known that the expansion of the imperial capital limits happened during the reign of emperors Bukka Raya II and Deva Raya I.