Prahararāja is a designation given to brāhmaṇas who represent the king when the throne is vacant. In Orissa, between the time of a king’s death and the enthronement of another king, a representative must sit on the throne. This representative is called Prahararāja. The Prahararāja is generally selected from a family of priests close to the king. During the time of Śrī Caitanya Mahāprabhu, the Prahararāja was Paramānanda Prahararāja.
Ref>>Srila Prabhupada Vani.