Mirza Raja Jai Singh was king of Amber (small township close to Jaipur). He was born on July 15 1611. His mother was the famous princess of Mewar and his father name was Maha Singh.
After the death of his elder brother Jagat Singh in 1621, he became the king of Amber at a young age of 10.
Titled as Mirza Raja
Raja Jai Singh gave great services to Shah Jahan (1627) for which he was entitled as Mirza Raja. He rebelled Khan Jahan Lodi along with his Afghan followers and promoted as a commander of 4000. He played a vital role against the southern sultanates and got a district of Chatsu in Ajmer in his kingdom as a reward. He expanded his kingdom by defeating Meo robber tribes in the north of Amber.
In 1638, the Persian commander Ali Mardan Khan surrendered the fort of Kandahar to Shah Jahan. The emperor’s son Shuja, accompanied by Mirza Raja Jai Singh, was sent to take liberation of this important fort. To frighten the Persian Shah from interfering in this task, Shah Jahan gathered a 50,000 strong army in Kabul. On this occasion Mirza Raja Jai Singh received the exclusive title of Mirza Raja from Shah Jahan.  His great-grandfather Raja Man Singh I was also honored by the same title by Emperor Akbar.
A great Builder
A powerful ally of Emperor Jahangir, Jai Singh was a great builder. The greater part of the palace at Amber was built by him. During his time, the influence of Persian art and letters dominated the court at Amber. Several crafts, such as inlay work in jewels and ivory flourished during his reign.
Final Days
Mirza Raja Jai Singh died on 28 August 1667 under mysterious circumstances. It is believed among the Rajputs that he had been poisoned by order of Aurangzeb.
