High Quality Content by WIKIPEDIA articles! Ivan Shishman (Bulgarian: Иван Шишман) ruled as emperor (tsar) of Bulgaria in Tarnovo from 1371 to 3 July 1395. The authority of Ivan Shishman was limited to the central parts of the Bulgarian Empire. His indecisive and inconsistent policy did little to prevent the fall of his country under Ottoman rule. In 1393 the Ottoman Turks seized the capital Tarnovo. Two years later, they captured Ivan Shishman`s last strongholds and executed him.