Dhirajlal Hirachand "Dhirubhai" Ambani who founded Reliance Industries in Bombay with his cousin. Ambani took Reliance Industries public in 1977 and by 2007, the combined fortune of the family was $60 billion, making the Ambanis the third richest family in the world.Extensive marketing of the brand in the interiors of India made it a household name.