Satyavati:Santanu -> Citrangada and Vicitravirya
Satyavatī had borne two powerful sons, both had died without producing an heir to the throne? All the kings on earth had paid tribute to Satyavatī’s eldest son, Citrāṅgadā. His reputation for prowess in battle and unwavering virtue had reached the heavens. It was thus that the mighty king of the Gandharvas, who bore the same name, became envious upon hearing his glories. The jealous Gandharva could not allow another famous and powerful Citrāṅgadā to live. He came to earth and challenged his rival to battle. After years of fighting, the valorous son of Satyavatī was slain and the proud Gandharva returned triumphant to the heavens.
Then the powerful Vicitravīrya ascended the throne, but suddenly died from an illness after only seven years of ruling. Neither he nor his brother left a child.