CC Ādi 11.42
pūrve nāma chila yāṅra ‘raghunātha purī’
The twenty-seventh prominent devotee of Nityānanda Prabhu was Ācārya Vaiṣṇavānanda, a great personality in devotional service. He was formerly known as Raghunātha Purī.
In the Gaura-gaṇoddeśa-dīpikā (97) it is said that Raghunātha Purī was previously very powerful in the eight mystic successes. He was an incarnation of one of the successes.