Sambhaji Raje Bhosle was the eldest son and successor to Emporer (Chhatrapati

Chhatrapati

Chhatrapati is the Indian honorific title equivalent to the European Emperor. It is more formally written as Kshetrapati, from the Sanskrit kshetra- and -pati...

) Shivaji, the founder of the Maratha empire

Maratha Empire

The Maratha Empire or the Maratha Confederacy was an Indian imperial power that existed from 1674 to 1818. At its peak, the empire covered much of South Asia, encompassing a territory of over 2.8 million km²....

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Sambhaji was born at Purandar fort

Purandar fort

Purandar fort पुरंदर किल्ला figures repeatedly in the rising of Shivaji against the Bijapur kingdom and the Mughals. Purandhar fort stands 4,472 ft. above the sea in the Western Ghats, 20 miles southeast of Pune. It actually consists of two forts - Purandar and Vajragad...

. He was 17 years old when his father Shivaji was crowned in 1674. His grandmother and mentor Jijabai

Jijabai

Jijabai was the mother of Shivaji, founder of the Maratha Empire.-Birth date and family life:Jijabai was born on 12 January 1598 and a daughter of Lakhoji Jadhav in present-day Buldhana district of Maharashtra State...

 died the same year. Sambhaji was taken as security by Mughal sardar Mirjha raja Jayasingh utill he receives all forts of agreement which Shivaji Maharaj did with him to stop his attack on maratha kingdom under his control.