CC Ādi 11.55

bhāgavate kṛṣṇa-līlā varṇilā vedavyāsa
caitanya-līlāte vyāsa — vṛndāvana dāsa
Word for word: 
bhāgavate — in Śrīmad-Bhāgavatam; kṛṣṇa-līlā — the pastimes of Lord Kṛṣṇa; varṇilā — described; veda-vyāsa — Dvaipāyana Vyāsadeva; caitanya-līlāte — in the pastimes of Lord Caitanya; vyāsa — Vedavyāsa; vṛndāvana dāsa — Śrīla Vṛndāvana dāsa Ṭhākura.
Translation: 
Śrīla Vyāsadeva described the pastimes of Kṛṣṇa in Śrīmad-Bhāgavatam. The Vyāsa of the pastimes of Lord Caitanya Mahāprabhu was Vṛndāvana dāsa.
Purport: 

Śrīla Vṛndāvana dāsa Ṭhākura was an incarnation of Vedavyāsa and also a friendly cowherd boy named Kusumāpīḍa in kṛṣṇa-līlā. In other words, the author of Śrī Caitanya-bhāgavata, Śrīla Vṛndāvana dāsa Ṭhākura, the son of Śrīvāsa Ṭhākura’s niece Nārāyaṇī, was a combined incarnation of Vedavyāsa and the cowherd boy Kusumāpīḍa. There is a descriptive statement by Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura in his commentary on Śrī Caitanya-bhāgavata giving the biographical details of the life of Vṛndāvana dāsa Ṭhākura.