Who is called the “Grand Old Man Of India”?

Dadabhai Naoroji is called the 'Grand Old Man of India' for his pioneering role in India's independence movement and economic advocacy. He was one of the first leaders to systematically document the 'drain theory' of British colonial exploitation. Mahatma Gandhi was the 'Father of the Nation', Vajpayee was a later BJP leader, and Gokhale was a respected mentor but not given this specific title.