Q. Who was the first wife of Chhatrapati Shivaji Maharaj, who was also the sister of Bajaji Rao Nimbalkar of Phaltan?
Answer: Saibai Nimbalkar
Notes: Saibai Nimbalkar was Shivaji's first wife and the sister of Bajaji Rao Nimbalkar, the 16th Raja of Phaltan. Saibai belonged to the Nimbalkar family of Maharashtra, strengthening political alliances within leading Maratha families through this marriage.