Can you tell me what the book says about Gajanan Maharaj?

The provided source material does not contain any references to Gajanan Maharaj. Instead, the text from Chapter 0 describes a different figure, simply referred to as "Maharaj," who would later be given the name Sai Baba. This Maharaj encountered a man named Chandbhai, miraculously located his lost horse, and later traveled with a wedding procession to Shirdi. It was there, as detailed in Chapter 0, that a devotee named Mhalasapati welcomed him with the words "Aavo Sai Baba," and he became known by that name from then on.