Bharadvaja: He is one of the seven great rsis and was present at the time of the birth ceremony of Arjuna. The powerful rsi sometimes undertook severe penances on the shore of the Ganges, and his asrama is still celebrated at Prayagadhama
SB Canto 1
Bharadvāja: He is one of the seven great ṛṣis and was present at the time of the birth ceremony of Arjuna. The powerful ṛṣi sometimes undertook severe penances on the shore of the Ganges, and his āśrama is still celebrated at Prayāgadhāma. It is learned that this ṛṣi, while taking bath in the Ganges, happened to meet Ghṛtacī, one of the beautiful society girls of heaven, and thus he discharged semen, which was kept and preserved in an earthen pot and from which Droṇa was born. So Droṇācārya is the son of Bharadvāja Muni. Others say that Bharadvāja the father of Droṇa is a different person from Maharṣi Bharadvāja. He was a great devotee of Brahmā. Once he approached Droṇācārya and requested him to stop the Battle of Kurukṣetra.