Mangkunegaran is a small hereditary Duchy located within the region of Surakarta in Indonesia. It was established in 1757 by Raden Mas Said, when he submitted his army to Pakubuwono III in February, and swore allegiance to the rulers of Surakarta, Yogyakarta, and the Dutch East Indies Company, and was given an appanage of 4000 households.
The Palace of the rulers of Mangkunegaran was established by Raden Mas Said who signed a treaty with the Dutch East India Company (VOC) in 1757. By virtue of the treaty, he became the rule of a part of Eastern Mataram and was henceforth known as Mangkunegara I. Known as Pura Mangkunegaran, the palace is located in the center of the city of Solo.