CC Ādi 13.74
mahā-guṇavān teṅha — ‘baladeva’-dhāma
After this, Jagannātha Miśra got a son of the name Viśvarūpa, who was most powerful and highly qualified because He was an incarnation of Baladeva.
Viśvarūpa was the elder brother of Gaurahari, Lord Śrī Caitanya Mahāprabhu. When arrangements were being made for the marriage of Viśvarūpa, He took sannyāsa and left home. He took the sannyāsa name of Śaṅkarāraṇya. In 1431 Śakābda Era (A.D. 1509), He disappeared in Pāṇḍarapura, in the district of Sholapur. As an incarnation of Saṅkarṣaṇa, He is both the ingredient and immediate cause of the creation of this material world. He is nondifferent from Śrī Caitanya Mahāprabhu, for the aṁśa and the aṁśī, or the part and the whole, are not different. As an incarnation of Saṅkarṣaṇa, Viśvarūpa belongs to the quadruple manifestation of catur-vyūha. In the Gaura-candrodaya it is said that Viśvarūpa, after His so-called demise, remained mixed within Śrī Nityānanda Prabhu.