Prabhavati was a 4th century regent of the western Indian Vakataka

Vakataka

The Vākāṭakas were a royal Indian dynasty that originated from the Deccan in the mid-third century CE. Their kingdom is believed to have extended from the southern edges of Malwa and Gujarat in the north to the Tungabhadra River in the south as well as from the Arabian Sea in the western to the...

 dynasty. Prabhavati was the daughter of a Naga

Naga people

The term Naga people refers to a conglomeration of several tribes inhabiting the North Eastern part of India and north-western Burma. The tribes have similar cultures and traditions, and form the majority ethnic group in the Indian state of Nagaland...

 dynasty princess from northern India who had been made a consort of the Gupta

Gupta Empire

The Gupta Empire was an ancient Indian empire which existed approximately from 320 to 550 CE and covered much of the Indian Subcontinent. Founded by Maharaja Sri-Gupta, the dynasty was the model of a classical civilization. The peace and prosperity created under leadership of Guptas enabled the...

 emperor Chandragupta II

Chandragupta II

Chandragupta II the Great, very often referred to as Vikramaditya or Chandragupta Vikramaditya in Sanskrit; was one of the most powerful emperors of the Gupta empire in northern India. His rule spanned c...

when the Naga lands were overrun by Gupta soldiers. Recognized as an heiress of Chandragupta, Prabhavati was married to the Vakataka king as a diplomatic gift. When the Vakataka king died shortly after the wedding, Prabhavati took the reins of government and ruled for 20 years, allying the Vakataka state closely with Gupta interests.

Source

India: A History by John Keay, published by Harper Perennial in 2000 in London, United Kingdom- page 142