(रघुवंश) or is a legendary Indian dynasty, primarily featured in Hindu scriptures such as the Itihasas and the Puranas. It is considered to be an offshoot of the or the Ikshvaku dynasty lineage of kings, tracing its ancestry to the sun deity Surya. Kings of the Raghuvaṃśa line are referred to as . The dynasty is named after Raghu, a legendary king who protected the sacrificial horse of ashvamedha from Indra. Raghuvaṃśī kings include Mandhata, Harishchandra, Sagara, Bhagiratha, Dilīpa, Raghu, Aja, Dasharatha and Rama. Kalidasa's work, Raghuvaṃśa, narrates the epic of the Raghuvaṃśa in 19 sargas (cantos). Several legendary kings came from the Solar dynasty and are referred to as Raghuvaṃśa after their ancestor, the king Raghu. Mandhata, who is said to have ruled the entire earth during the Vedic period, and defeated the Indra, the king of the devas. Sagara, a king who was tricked by Indra into a conflict with the sage Kapila, leading to the death of his 60,000 sons, the descent of the Ganga to earth, and his sons' revival Harishchandra, the king of Ayodhya, believed to be an exemplar of honesty Dilīpa, said to be the most righteous and chivalrous emperors of the Ikshvaku dynasty Bhagiratha said to be the legendary king of the Ikshvaku dynasty, who brought the river Ganga, personified as the river goddess Ganga, to Earth from the heavens Raghu II, whose descendants are known as Raghuvaṃśa. The Valmiki Ramayana refers to Raghukula, a clan of this king Aja, son of King Raghu and grandfather of Rama. Dasharatha, son of Aja and father of Rama, Lakshmana, Bharata, and Shatrughna Rama, he is considered the seventh avatar of Vishnu. Rama's story before he became king of Ayodhya is recounted in the Ramayana. After he ascended the throne, he performed the ashvamedha yajna. Bharata, his younger brother, won the country of Gandhara and settled there Lava and Kusha – They were the twin sons of Rama and his wife Sita. Lava ruled south Kosala while Kusha ruled north Kosala, including Ayodhya. Kusha married the naga princess Kumudvati, the sister of Kumuda.