Dewan

The originally Persian title of dewan (also quite commonly known as Diwan; also spelled -van) has, at various points in Islamic history, designated a powerful government official, minister or ruler.

Etymology

The word is Persian in origin, and was loaned into Arabic. The original meaning was "bundle (of written sheets)", hence "book", especially "book of accounts," and hence "office of accounts," "custom house," "council chamber". The meaning divan "long, cushioned seat" is due to such seats having been found along the walls in Middle Eastern council chambers.

Council

The word first appears under the Caliphate of Omar I (A.D. 634–644). As the Caliphate state became more complicated, the term was extended over all the government bureaus.

The divan of the Sublime Porte was the council or Cabinet of the state. In the Ottoman Empire, it consisted of the usually (except in the Sultan's presence) presiding Grand Vizier and other viziers, and occasionally the Janissary Ağa.

In 19th Century Romania the Ad hoc Divan was a body which played a role in the country's development towards independence from Ottoman rule.