Who was Devidas and what was his relationship with the Fakir and Sai Baba as told in Chapter 5?

According to Chapter 5, Devidas was a very wise ascetic who came to Shirdi and settled in the Maruti temple twelve years before Sai Baba's return with the wedding party. He was so respected that he taught villagers like Appa Bhill and was even considered a Guru by Tatyaba. Chapter 5 describes an incident where a Fakir challenged Devidas to a scriptural debate. Devidas, with his profound detachment, defeated the Fakir, who then fled to Vaijapur. Years later, this Fakir returned to Shirdi. His delusion that he was the Guru and Sai was the disciple was completely dispelled, and he bowed to Sainath. Sai Baba, for his part, always treated the Fakir with respect, demonstrating a profound lesson in humility.