Bagha Shad was a Göktürk shad

Shad (prince)

Shad was a state office in the early Turkic states, roughly equivalent to governor. "Shad" could only be an appointee over a vassal tribe, where he represented interests of the preeminent Kagan. The name of this tribe was included in his title. For example, Tardu-shad could only be a Shad over...

or general of the early 7th century CE. He was a close kinsman and subject of the Western Göktürk

Western Turkic Khaganate

The Western Turkic Khaganate was formed as a result of the internecine wars in the beginning of the 7th century after the Göktürk Khaganate had splintered into two politiesEastern and Western.The Western Turks initially sought friendly relations with the Byzantine Empire in order to expand their...

 khagan

Khagan

Khagan or qagan , alternatively spelled kagan, khaghan, qaghan, or chagan, is a title of imperial rank in the Mongolian and Turkic languages equal to the status of emperor and someone who rules a khaganate...

, Tong Yabghu

Tong Yabghu

Tong Yabghu Qaghan was khagan of the Western Turkic Khaganate from 618 to 628 AD...

. Bagha Shad was probably the father of Böri Shad and may have been the yabghu or prince of the Khazars

Khazars

The Khazars were semi-nomadic Turkic people who established one of the largest polities of medieval Eurasia, with the capital of Atil and territory comprising much of modern-day European Russia, western Kazakhstan, eastern Ukraine, Azerbaijan, large portions of the northern Caucasus , parts of...

.

He is referred to in Chinese

Chinese language

The Chinese language is a language or language family consisting of varieties which are mutually intelligible to varying degrees. Originally the indigenous languages spoken by the Han Chinese in China, it forms one of the branches of Sino-Tibetan family of languages...

 sources as having sojourned in China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 from 618-626, possibly as Tong Yabghu's emissary to the Tang emperor

Tang Dynasty

The Tang Dynasty was an imperial dynasty of China preceded by the Sui Dynasty and followed by the Five Dynasties and Ten Kingdoms Period. It was founded by the Li family, who seized power during the decline and collapse of the Sui Empire...

. Thereafter he disappears from the historical record.