Who was responsible for naming 'Sai Baba', and what were the events surrounding this naming?

The name 'Sai Baba' was bestowed upon Maharaj by a gentleman named Mhalasapati. As detailed in Chapter 0, when Maharaj arrived in Shirdi, he entered the Khandoba temple wearing a kafni, a cap, and a dhoti. Mhalasapati, a goldsmith and devotee of Khandoba, was in the temple and, upon seeing Maharaj, greeted him with the words 'Aavo Sai Baba' (Come, Sai Baba). Maharaj accepted and kept this name until the end. The text notes that when his testimony was taken in a commission and he was asked his name, he replied, 'They call me Sai Baba,' affirming the name Mhalasapati had given him.