Mustafa I (/ ˈ m ʊ s t ə f ə /; Ottoman Turkish: مصطفى اول ; c. 1600/1602 [1] [2] [3] – 20 January 1639), called Mustafa the Saint (Veli Mustafa) during his second reign, and called Mustafa the Mad (Deli Mustafa) by historians, was twice the sultan of the Ottoman Empire from 22 November 1617 to 26 February 1618, and from 20 May ...