Suryaji Malusare was the younger brother of Tanaji Malusareborn to his father Kaloji Malusare. Just like Tanaji, Suryaji also helped Shivaji in his revolt and was a prominent sardar under him.
In 1670, a force consisting offive hundred Mavala soldiers launched a surprise night assault on the fort, defended by twelve hundred Rajput soldiers under Udaybhan Rathod's command. During the battle, Tanaji, and Udaybhan fought with swords and both perished in the duel. After Tanaji was killed, his brother Suryaji commanded the remaining Mavalas since Tanaji was dead. A signal flame was lighted on high upon the fort to inform Shivaji of their victory from Rajgad.