Who were Sai Baba's earliest devotees in Shirdi, and how did they serve him?

Chapter 0 identifies Sai Baba's earliest devotees as Mhalasapati, Kashiram Shimpi, and Appa Jagle. After Mhalasapati welcomed Baba into the village, he introduced him to his companions, Kashiram and Appa. The three of them, who were already accustomed to serving saints and fakirs visiting Shirdi, became total devotees of Maharaj. Kashiram's service was particularly notable; he served with his body, mind, and wealth. He took a vow to provide Baba with chillum, tobacco, firewood for his Dhuni, and money. He even offered his entire money bag to Baba, requesting him to take as much as he wished.