Syr-Tardush

in Anatolia
Artuqid dynasty
Saltuqid dynasty
in Azerbaijan
Ahmadili dynasty
Ildenizid dynasty
in Egypt
Tulunid dynasty
Ikhshidid dynasty
in Fars
Salghurid dynasty
in The Levant
Burid dynasty
Zengid dynasty

The Xueyantuo (薛延陀) (Seyanto, Se-yanto, Se-Yanto) or Syr-Tardush were an ancient Tiele Turkic people and Turkic khanate in central/northern Asia who were at one point vassals of the Gokturks, later aligning with China's Tang Dynasty against the Eastern Gokturks. The Xueyanto homeland is near the Selenga River/Xueyanhe River (薛延河江/偰輦河江), so their tribe's name is Seyanto/Xueyantuo (薛延陀), Chinese Han characters underwent considerable changes according to changes in Chinese dynasties, so the tribe is variously known as Xueyantuo, Xueyanhe, Xienianhe, Seyanto, Selenga, Selyanha, etc.

Initially the Xue and the Yantuo were two separate tribes. The Xue appeared earlier as Xinli but were not referred to again until the 7th century. After Yishibo, the Xueyantuo founded a short-lived Qaghanate over the steppe under Zhenzhu Khan, his son Duomi Khan and nephew Yitewushi Khan, the last of which eventually surrendered to the Chinese.

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Wikipedia