derebey

A derebey (trans. from Tirebey, riverside castle lord) was a feudal lord in Anatolia and the Pontic areas of Lazistan and Adjara in the 18th century, with considerable independence from the central government of the Ottoman Empire.

Derebeys were required to provide military assistance in time of war, but ruled and administered their own territories, in full freedom in practical terms, and often forming local dynasties. Their emergence was often sparked by the gradual abandonment of the timar system administered by the military fiefdom of sipahis, and the tendency of the central government to sub-contract tax revenues as of the 18th century, receiving a determined sum from the derebey and outsourcing on them the task of collecting from the taxpayers themselves. In official terminology, these intermediaries were often referred to as , although other terms were also used for describing this class whose official status, effective powers and geographical extent of authority could greatly vary from one derebey to another, and could also evolve differently over time. The particular characteristics of their region of authority, such as economic development or its becoming an issue within contexts of international politics, also greatly influenced derebeys' destinies. While the derebeys did not seek to overthrow the Ottoman state, they did seek autonomy from the empire for themselves and their heirs. Through their collection and control of tax revenues in their region as well as only providing armed men for the sultan's wars when it benefitted their interests, the derebeys demonstrated a lack of centralized authority in the Ottoman state during the 18th and early 19th centuries.