Who was the Parsi merchant Ratanji, and why was he so unhappy despite his immense wealth?

Ratanji was a famous, religious, and wealthy Parsi merchant from Nizam's state, known for his vast property and generosity. As described in Chapter 14, while he appeared to be living a life of immense joy, he was tormented by a significant inner worry. This unhappiness stemmed from the fact that he was childless in terms of a male heir. He had twelve daughters one after another, and this absence of a son made him feel that his great wealth and worldly happiness were ultimately fruitless. He was in a state of constant contemplation, praying for a son to support his lineage, which left his mind without peace.