Chiranjiva was an important branch of Chaitanya tree.
Shrila Krishnadas Kaviraja Goswami writes:
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. (C.C. Adi 10.78-79)