Al-Adil Sayf ad-Din Tuman bay (السلطان الملك العادل أبو النصر طومان باى الأشرفى قايتباى) was the twenty fifth Mamluk

Mamluk

A Mamluk was a soldier of slave origin, who were predominantly Cumans/Kipchaks The "mamluk phenomenon", as David Ayalon dubbed the creation of the specific warrior...

 Sultan of Egypt

Egypt

Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

 from the Burji dynasty

Burji dynasty

The Burji dynasty المماليك البرجية ruled Egypt from 1382 until 1517. It proved especially turbulent, with short-lived sultans. Political power-plays often became important in designating a new sultan. During this time Mamluks fought Timur Lenk and conquered Cyprus. Constant bickering may have...

. He ruled for about one hundred days in 1501.

Tuman Bay I was about forty years old when he was selected as Sultan.
Although he was popular before becoming a Sultan, on becoming Sultan he soon lost that popularity due to his cruel measures, which was manifested in condemning one of the princes to death by hanging for alleged conspiracy.

He was overthrown and succeeded by Al-Ashraf Qansuh al-Ghawri

Al-Ashraf Qansuh al-Ghawri

Al-Ashraf Qansuh al-Ghawri was the second last of the Mamluk Sultans. One of the last of the Burji dynasty, he reigned from 1501 to 1516.On the disappearance of Sultan Al-Adil Sayf ad-Din Tuman bay I, it was not till after some days that the choice of the Emirs and Mamluks fell upon Al-Ashraf...

.

Sources

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