How did Sai Baba first arrive in Shirdi, and who was instrumental in his coming?

According to Chapter 39 of the Sai Satcharitra, Sai Baba's arrival in Shirdi was connected to a man named Chand Patil. Sai first appeared in the Nizam State under a mango tree and was found by Chand Patil. Later, Sai unexpectedly arrived in Shirdi along with the wedding party of Chand Patil's nephew, as the bride's match was settled in Shirdi. While the text identifies Chand Patil as the instrument for this event, it also clarifies that Sai came to Shirdi of his own accord out of great concern for the upliftment of his devotees.