Vaishnava Samhita. Shri Govindadasa Charitam. Vol III Book VII Chp 9 Shloka 1

श्रीसद्गुरुरुवाच

आसीद्गोविन्ददासाख्यः कवीन्द्रो वैष्णवोत्तमः |

शिष्यो विट्ठलनाथस्य कृष्णकीर्तनतत्परः ||

Shri Sadguru said

There was a great vaishnavottama named Govindadasa. He was the follower of Shri Vitthalanatha. He had Krishna kirtan as the only aim of his life. He was a great composer too.