CC Madhya 25.63

śekhara, paramānanda, tapana, sanātana
cāri-jana mili’ kare nāma-saṅkīrtana
Word for word: 
śekhara — Candraśekhara; paramānanda — Paramānanda Purī; tapana — Tapana Miśra; sanātana — Sanātana Gosvāmī; cāri-jana mili’ — all four of them; kare — perform; nāma-saṅkīrtana — chanting of the Hare Kṛṣṇa mantra.
Translation: 
There were four people accompanying Śrī Caitanya Mahāprabhu, and these were Candraśekhara, Paramānanda Purī, Tapana Miśra and Sanātana Gosvāmī. They were all chanting the Hare Kṛṣṇa mahā-mantra in the following way.