Shashanka

Shashanka (Bengali: শশাঙ্ক Shôshangko) is often attributed with creating the first separate political entity in a unified Bengal called Gauda and as such is a major figure in Bengali history. He reigned in 7th century AD, and some historians place his rule approximately between 590 AD and 625 AD. He is the contemporary of Harshavardana. His capital was called Karnasuvarna (কর্ণসুবর্ণ Kôrnoshubôrno or কানসোনা Kanshona) and is located in modern Murshidabad. The development of the Bengali calendar is also often attributed to Shashanka as the starting date falls squarely within his reign.