Can you describe the origin of the name "Sai Baba" and the initial devotees who served him in Shirdi?

According to Chapter 0, the name "Sai Baba" was given to Maharaj upon his arrival in Shirdi. When he entered the Khandoba temple, a resident goldsmith named Mhalasapati greeted him with the words "Aavo Sai Baba," meaning "Come, Sai Baba." Maharaj held onto this name for the rest of his life. The text mentions that when his testimony was taken in a commission and he was asked his name, he replied, "They call me Sai Baba." Mhalasapati, along with his companions Kashiram Shimpi and Appa Jagle, became his first devotees in Shirdi. These three men had a practice of serving saints and fakirs who visited the village, and they extended this service to Sai Baba with great devotion.