CC Madhya 7.39
iṅho saṅge kari’ laha, dhara nivedana
Śrī Nityānanda Prabhu continued, “Here is a simple brāhmaṇa named Kṛṣṇadāsa. Please accept him and take him with You. That is My request.
This Kṛṣṇadāsa, known as Kālā Kṛṣṇadāsa, is not the Kālā Kṛṣṇadāsa mentioned in the eleventh chapter, verse 37, of the Ādi-līlā. The Kālā Kṛṣṇadāsa mentioned in the eleventh chapter is one of the twelve gopālas (cowherd boys) who appeared to substantiate the pastimes of Lord Caitanya Mahāprabhu. He is known as a great devotee of Lord Nityānanda Prabhu. The brāhmaṇa named Kālā Kṛṣṇadāsa who went with Śrī Caitanya to South India and later to Bengal is mentioned in the Madhya-līlā, tenth chapter, verses 62-79. One should not take these two to be the same person.