Charles Joseph Patissier, Marquis de Bussy-Castelnau (1718 – 7 January 1785) was the Governor General of the French colony of Pondicherry from 1783 to 1785. He servied with distinction under Joseph François Dupleix in the East Indies, receiving the Order of Saint Louis. He contributed to the recovery from Britain of Pondicherry in 1748, and was named in 1782 to lead all French military forces beyond the Cape of Good Hope. He coordinated his operations with Pierre André de Suffren and fought with distinction against the numerically superior British during the Indian campaigns of the American War of Independence.
The Yanam region was presented to the Marquis de Bussy, the French General by Vizianagaram King Pusapati Peda Vijaya Rama Raju (1670–1756) as a token of gratitude for the help rendered by him in the fight against the rulers of Bobbili. Actually, it was in 1750 when French leader de Bussy was staying with entire battalion near Hyderabad. Many soldiers have died due to some disease (Small pox). He was running with financial crisis. Vijayaramaraju of Vizianagaram helped him to overcome financial crisis and rebuild his battalion.
In 1753, a Paravana of Asif ad-Dawlah Mir Ali Salabat Jang, Subedar of Deccan conceded to Marquis de Bussy the paraganas of Chicacole, Ellore, Rajahmundry etc. with an annual revenue RS.2, 00,000 for the maintenance of the French troops in the Subah in recognition of the help of these Circars amounted up to 10 lakhs of Rupees per year. de Bussy helped Salabat Jang to be the Subedar of Deccan. The agreement made between the French and Salabat Jang in Aurangabad bears the signature of Said Loukshur, Minister of Salabat Jang. Actually, He was one of the key sub-ordinates of Dupleix who helped him in expanding French activities in Northern Circars and along the Coromandel Coast. Men in his command also included the famous Hyder Ali of Mysore.
In 1756 Marquis de Bussy visited Rajahmundry. Vijayaramaraju had given a warm welcome to Bussy by going in front at Rajahmundry. There were differences between Vizianagaram Maharaja and the ruler of Bobbili, which led to the battle of Bobbili starting on 23 January 1757. The war was fought between the Rajah of Vizianagaram, Vijayaramaraju aided by the Bussy, the then French General and the Rajah of Bobbili. During the battle the Bobbili fort was totally destroyed and many Bobbili soldiers died. There is still a street named after Bussy in Yanam.
===Relations with the Mughal Emperor Alamgir II===
In the year 1755, De Bussy received letter from the newly ordained Mughal Emperor Alamgir II requesting French assistance to put down the Maratha Confederacy. Alamgir II asked if it was possible for De Bussy to dispatch a French contingent of 1000 strong. Alamgir II also promised to pay a hefty sum for the maintenance of the French and even promised to settle disputes in the Carnatic Wars in favor of the French East India Company.
De Bussy died in Pondicherry in 1785.
He was married to the youngest stepdaughter of Dupleix, Marie in March 1754. He begot a daughter from her who died at Paris in 1759.