About Jamnagar:

Jamnagar is a city and a municipal corporation in Jamnagar district in the Indian state of Gujarat. The city was built up substantially by Maharaja Kumar Shri Ranjitsinhji in the 1920s, when the district was known as Nawanagar. The district lies just to the south of the Gulf of Kutch.

Jamnagar has shot to prominence as Reliance Industries, India's largest private company, established the world's largest refinery near Moti Khavdi village. It is also home to Essar Oil, another important oil refinery of India.

History:

During the lion hunt, they got the chance to kill the lion just when it was going to attack the Emperor. As a reward, an army of 1,00,000 was sent with them to regain back their kingdom. When Jam Rawal heard of the two princes coming back to the Kutch with the imperial army, he started getting ready for the battle. On one night, Goddess Ashapura came in his dream and told him that as he had broken the oath taken on her name about not killing Hamirji, even though, he was the person responsible for the death of his father. She should have punished him, but as he had at all other times honored her. So he should no longer dwell in Kutch but cross the sea and take Kathiawar as a dwelling place.