Who was the Parsi merchant Ratanji and what was the source of his deep unhappiness?

Ratanji was a very famous, wealthy, and religious Parsi merchant from Nizam's state. He possessed vast properties, including carriages, horses, and farms, and was known for his immense generosity. However, as described in Chapter 14, despite his outward appearance of swimming in an 'ocean of joy,' he was tormented by an inner worry. The source of his deep unhappiness was that he was childless in terms of having a male heir. He had twelve daughters but no son, which made him feel that his immense wealth and happiness were 'entirely fruitless.' This constant contemplation for a son left his mind without peace.