 The Northern portion was known as the 'Mughal Carnatic', the Southern the 'Maratha Carnatic' with the Maratha fortresses of Gingee and Ranjana-gad.Carnatic thus was the name commonly given to the region of Southern India that stretches from the East Godavari district of Andhra Pradesh in the North, to the Maratha fort of Ranjana-Gad in the south (including Kaveri delta) and Coromandal Coast in the east to Western Ghats in the west.The Nawabs of the Carnatic trace their origin back to second Caliph Umar ibn al-Khattab.