, the founder of the Ottoman Empire

Ottoman Empire

The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

. His other son was Saru Yatı, the father of Bay Hodja. It is said that Suleyman Shah drowned in the river Euphrates

Euphrates

The Euphrates is the longest and one of the most historically important rivers of Western Asia. Together with the Tigris, it is one of the two defining rivers of Mesopotamia...

 in modern-day Syria

Syria

Syria , officially the Syrian Arab Republic , is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the West, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest....

. An Ottoman tomb

Tomb of Suleyman Shah

The Tomb of Suleyman Shah is the supposed burial place of Suleyman Shah, the grandson of Seljuk Bey . He supposedly drowned in the Euphrates in modern-day Syria and an Ottoman tomb in or near Qal'at Ja'bar has been associated with Suleyman Shah. In accordance with Article 9 of the Treaty of Ankara ...

 in or near Qal'at Ja'bar

Qal'at Ja'bar

Qal'at Ja'bar is a castle on the left bank of Lake Assad in Ar-Raqqah Governorate, Syria. Its site, formerly a prominent hill-top overlooking the Euphrates Valley, is now an island in Lake Assad that can only be reached by an artificial causeway...

 has historically been associated with Suleyman Shah. In accordance with Article 9 of the Treaty of Ankara (1921)

Treaty of Ankara (1921)

The Ankara Agreement was signed on October 20, 1921 between France and the Grand National Assembly of Turkey...

 signed between France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 and Turkey

Turkey

Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

, the tomb has been considered Turkish territory. When the area where the tomb was located was flooded by Lake Assad, the reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 of the Tabqa Dam, the tomb was moved to a new location north of Qal'at Ja'bar.