Brahmā created the four great sages Sanaka, Sananda, Sanātana and Sanat to entrust them with these four principles of spiritual advancement, and they inaugurated their own spiritual party, or sampradāya, known as the Kumāra-sampradāya, or later on as the Nimbārka-sampradāya, for the advancement of bhakti.
(Srimad Bhagavatam------3:12:4------purport).

Not only were the Kumāras born of the best brāhmaṇa (Lord Brahmā), but they are addressed herein as dvija-śreṣṭhāḥ ("the best of the brāhmaṇas") on account of their being Vaiṣṇavas also. As we have already explained, they have their sampradāya (disciplic succession), and even to date the sampradāya is being maintained and is known as the Nimbārka-sampradāya. Out of the four sampradāyas of the Vaiṣṇava ācāryas, the Nimbārka-sampradāya is one.
(Srimad Bhagavatam------4:22:12------purport).

There are primarily four parties spreading devotional service all over the universe. These are the Rāmānuja-sampradāya, the Madhva-sampradāya, the Viṣṇu Svāmī-sampradāya and the Nimbārka-sampradāya.
(Srimad Bhagavatam------4:28:31------purport).

As in the modern day there are many champions in sports, so in bygone days there were many learned scholars in India who were champions in learning. One such person was Keśava Kāśmīrī, who came from the state of Kashmir. He traveled all over India and at last came to Navadvīpa to challenge the learned scholars there. Unfortunately he could not conquer the learned scholars in Navadvīpa, for he was defeated by the boy scholar Caitanya Mahāprabhu. Later he understood that Caitanya Mahāprabhu is none other than the Supreme Personality of Godhead. Thus he surrendered unto Him and later became a pure Vaiṣṇava in the sampradāya of Nimbārka. He wrote Kaustubha-prabhā, a commentary on the Vedānta commentary of the Nimbārka-sampradāya, which is known as the Pārijāta-bhāṣya.
(Sri Caitanya Caritamrta------1:16:25------purport).

The Bhakti-ratnākara mentions Keśava Kāśmīrī and lists his predecessors in the disciplic succession of the Nimbārka-sampradāya: (1) Śrīnivāsa Ācārya, (2) Viśva Ācārya, (3) Puruṣottama, (4) Vilāsa, (5) Svarūpa, (6) Mādhava, (7) Balabhadra, (8) Padma, (9) Śyāma, (10) Gopāla, (11) Kṛpā, (12) Deva Ācārya, (13) Sundara Bhaṭṭa, (14) Padmanābha, (15) Upendra, (16) Rāmacandra, (17) Vāmana, (18) Kṛṣṇa, (19) Padmākara, (20) Śravaṇa, (21) Bhūri, (22) Mādhava, (23) Śyāma, (24) Gopāla, (25) Balabhadra, (26) Gopīnātha, (27) Keśava, (28) Gokula and (29) Keśava Kāśmīrī.
(Sri Caitanya Caritamrta------1:16:25------purport).