CC Antya 13.91
viśvāsa-khānāra kāyastha teṅho rājāra viśvāsa
In Bengal he met Rāmadāsa Viśvāsa, who belonged to the kāyastha caste. He was one of the king’s secretaries.
The words viśvāsa-khānāra kāyastha indicate a secretary or clerk belonging to the kāyastha caste. Kāyasthas were usually secretaries to kings, governors or other important persons. It is said that anyone working in the government secretariat at this time was a kāyastha.