The most fundamental of Hindu deities, is the Trinity of Brahma, Vishnu and Shiva - popular deities include Ganesha, Krishna, Hanuman and goddesses like Lakshmi, Durga,Saraswati.
Lord Vishnu is a manifestation of Lord Shiva. One of Vishnu's incarnartions on this Earth plane is Lord Krishna.
In Pandarpur, many have had the vision of Lord Vitthal. Vitthal is a manifestation of Lord Krishna (also known as Krishna standing on a brick) who appeared to the poor people of the region of Pandarpur (and elsewhere), often with the goddess Lakshmi, the greatest of Lord Vishnu's consort.
The name Vithoba means Father Vitthala. Vitthala is said to have been derived from the word Vishnu in Kannada. Panduranga is a sanskritized form of Pandarga, the old name of Pandharpur.