Eastern Ganga Dynasty in the context of Western Ganga Dynasty

Parlakhemundi Estate was a Zamindari estate in the Orissa Province, India during the British era. Before the creation of the Orissa province, it was under the Madras Presidency. The state was ruled as an independent kingdom till 1769.The royal family belong to the Krishnatreya gotra Odia Kshatriya and traced their lineage to Eastern Ganga Dynasty. It was a zamindari estate lying in the southwestern portion of Ganjam district, covering an area of 615 square miles. It was bounded in the south by the district of Visakhapatnam and on the west by the Jeypore Estate and the tribal agencies of the Eastern Ghats.

The zamindars were a branch of the Eastern Ganga Dynasty that survived as the rulers of the Paralakhemundi estate, currently part of the Gajapati district, Odisha.

Western Ganga was an important ruling dynasty of ancient Karnataka in India which lasted from about 350 to 999 CE. They are known as "Western Gangas" to distinguish them from the Eastern Gangas who in later centuries ruled over Kalinga (modern Odisha and northern Andhra Pradesh). The general belief is that the Western Gangas began their rule during a time when multiple native clans asserted their freedom due to the weakening of the Pallava empire in South India, a geo-political event sometimes attributed to the southern conquests of Samudra Gupta. The Western Ganga sovereignty lasted from about 350 to 550 CE, initially ruling from Kolar and later moving their capital to Talakadu on the banks of the Kaveri River in modern Mysore district.

After the rise of the imperial Chalukyas of Badami, the Gangas accepted Chalukya overlordship and fought for the cause of their overlords against the Pallavas of Kanchi. The Chalukyas were replaced by the Rashtrakutas of Manyakheta in 753 CE as the dominant power in the Deccan. After a century of struggle for autonomy, the Western Gangas finally accepted Rashtrakuta overlordship and successfully fought alongside them against their foes, the Chola Dynasty of Tanjavur. In the late 10th century, north of Tungabhadra river, the Rashtrakutas were replaced by the emerging Western Chalukya Empire and the Chola Dynasty saw renewed power south of the Kaveri river. The defeat of the Western Gangas by Cholas around 1000 resulted in the end of the Ganga influence over the region.