According to Bhagwan Singh Rana’s book, “Maharana Pratap” his 5th wife was Phool Bai Rathore. Now, Phool Bai Rathore is none other than the Princess Phool Kanwar of Marwar because while a young princess is called as kanwar in the Rajput tradition she becomes Bai once she is married. As far as the surname “Rathore” is concerned it is the sub caste in the Rajput tradition. Just like Maharana Pratap was Sisodia Rajput, Phool Kanwar was Rathore Rajput of Marwar