Sulochana is the forty-second branch of Chaitanya tree. He lived in the village of Shrihatta along with his dear friend Chiranjiva. They were completely surrendered to Lord Chaitanya, and because they were the friends and helpers of Narahari dasa they were honored and considered great souls.
vasanta, navani hoda, gopala, sanatana
visnai hajara, krsnananda, Sulochana
(C.C.1.11.50)
Vasanta was the fifty-first, Navani Hoda the fifty-second, Gopala the fifty-third, Sanatana the fifty-fourth, Visnai the fifty-fifth, Krishnananda the fifty-sixth and Sulochana the fifty-seventh.
Shrila Prabhupada writes in the purport:
Shrila Bhaktisiddhanta Saraswati Thakura writes in his Anubhasya, “Navani Hoda appears to have been the same person as Hoda Krishnadasa, the son of the King of Badagachi. His father’s name was Hari Hoda. One can visit Badagachi by taking the Lalagola-ghata railway line. Formerly the Ganges flowed by Badagachi, but now it has become a canal known as the Kalsira Khala. Near the Mudagacha station is a village known as Shaligrama in which King Krishnadasa arranged for the marriage of Shri Nityananda Prabhu, as described in the Bhakti-ratnakara (Twelfth Wave). It is sometimes said that Navani Hoda was the son of Raja Krishnadasa. His descendants still live in Rukunapura, a village near Bahiragachi. They belong to the dakshina-radhiya-kayastha community, but, having been reformed as brahmanas, they still initiate all classes of men.”
khandavasi mukunda-dasa, sri-raghunandana
narahari-dasa, cirañjiva, Sulochana
ei saba mahasakha—Chaitanya-krpadhama
prema-phala-phula kare yahan tahan dana
(C.C.1.10.78-79)
Shri Khandavasi Mukunda and his son Raghunandana were the thirty-ninth branch of the tree, Narahari was the fortieth, Chiranjiva the forty-first and Sulochana the forty-second. They were all big branches of the all-merciful tree of Chaitanya Mahaprabhu. They distributed the fruits and flowers of love of Godhead anywhere and everywhere.
Shri Sulochana was one of Shri Chaitanya Mahaprabhu’s associates and in Krishna-lila he was Chandrashekhara Gopi. 
Shri Khandavasi Mukunda and his son Raghunandana were the thirty-ninth branch of the tree, Narahari was the fortieth, Chiranjiva the forty-first and Sulochana the forty-second. They were all big branches of the all-merciful tree of Chaitanya Mahaprabhu. They distributed the fruits and flowers of love of Godhead anywhere and everywhere. (In the wallpaper: Shri Gaura Chandra, ISKCON Chowpatty, Mumbai).