Dhruva was an ascetic devotee of Vishnu mentioned in the Vishnu Purana and the Bhagavata Purana.The Sanskrit term dhruva nakshatra has been used for Pole Star, it is known as the North Star even today, personified as son of Uttānapāda and grandson of Manu. Listen to the story of how a 5 years old child pleases Lord Vishnu and is rewarded the star. Listen now !!!