Although it is unknown when (or how) Ganesh Chaturthi was first observed, the festival has been publicly celebrated in Pune since the era of Shivaji (1630–1680, founder of the Maratha Empire). The Peshwa rulers in the 18th century were devotees of Ganesh, and started a public Ganesh festival in their capital city of Pune during the month of Bhadrapad. After the start of the British Raj, the Ganesh festival lost state patronage and became a private family celebration in Maharashtra until its revival by Indian freedom fighter and social reformer Lokmanya Tilak.