Vaishnava Samhita. Premanidhi Charitam. Vol III Book VI Chp 19 Shloka 11

कश्चित् प्रेमनिधिर्नाम ब्राह्मणो वैष्णवोत्तमः  |
अवसद्यमुनातीरे कृष्णाराधनतत्परः ||

On the bank of the Yamuna, there was a brahmana named Premanidhi. He was a distinguished vaishnava having the service of Shri Krishna as the only object of his life.