Vichitravirya
Vichitravirya (Sanskrit: विचित्रवीर्य, vicitravīrya) was the son of Shantanu, the king of Hastinapur and Satyavati. He was the grandfather of the Pandavas and Kauravas.
Vichitravirya had an elder brother named Chitrāngada, whom his half-brother Bhishma placed on the throne of the kingdom of the Kurus after Shantanu's death. He was a mighty warrior but the king of the Gandharvas defeated and killed him at the end of a long battle. Thereafter, Bhishma consecrated Vichitravirya, who was still a child, to the kingdom.
When he had reached manhood, Bhishma married him to Ambika and Ambalika, beautiful daughters of the king of Kashi. Vichitravirya loved his wives very much and was adored by them. But after seven years he fell ill of consumption and could not be healed despite the efforts of his friends and physicians. Like his brother Chitrangada, he died childless. Subsequently, through a levirate (niyoga) marriage to his half-brother sage Vyasa, his wives and a maid gave birth to three children, namely Dhritarashtra, Pandu and Vidura.