Dembiya (Amharic: ደምቢያ Dembīyā; also transliterated Dembea, Dambya, Dembya, Dambiya, etc.) is a historic region of Ethiopia, intimately linked with Lake Tana. According to the account of Manuel de Almeida, Dembiya was "bounded on East by Begemder, on South by Gojjam, on West by Agaws of Achefer and Tangha. Lake Tsana, formerly called Dambaya, is in this region."The region included the current woredas of Dembiya, Gondar zuriya, Libo Kemkem, Fogera, Dera. Takusa and Alefa. Dembiya encircled more than 89% of lake Tana (previously called lake Dembiya). The region was governed by Ahmed ibn Ibrahim al-Ghazi and also served well as his personal residence and seat of government during the Ethiopian-Adal War. The rest of the province was divided among the Adalite soldiers while the native Amhara population served as peasant farmers. Alexander Murray, in his preface to the third volume of Bruce's account, further describes it as "on the east it includes Foggora, Dara, and Alata; on the north-east Gondar, the metropolis, and the rich district beneath it; on the southwest, the district of Bed (the plain barren country) and, on the west, the lands around Waindaga and Dingleber."