Budha (Sanskrit: बुध) is the Sanskrit word for the planet Mercury, personified as a god. Also a god who represented the intelligence.
He is also known as Somaya, Rohinaya, and rules over the nakshatras (lunar mansions) of Ashlesha, Jyeshtha, and Revati.
Pururavas (Sanskrit: पुरूरवस्, Purūravas) is a character in Hindu literature, a king who served as the first of the Lunar dynasty.
According to the Vedas, he is a legendary entity associated with Surya (the sun) and Usha (the dawn), and is believed to reside in the middle region of the cosmos. The Rig Veda (X.95.18) states that he was a son of Ilā and was a pious ruler. However, the Mahabharata states that Ila was both his mother and his father. According to the Vishnu Purana, his father was Budha, and he was ancestor of the tribe of Pururavas, from whom descended the Yadavas, Kauravas, and Pandavas of Mahābhārata.
The Lunar dynasty (IAST: Candravaṃśa) is a lineage or dynasty which claims to be descended from Chandra or Soma (the Hindu lunar deity).
According to the Shatapatha Brahmana, Pururavas was the son of Budha (himself often described as the son of Soma) and the gender-switching deity Ila (born as the daughter of Manu). Pururavas's great-grandson was Yayati, who had five sons named Yadu, Turvasu, Druhyu, Anu, and Puru. These seem to be the names of five Vedic tribes as described in the Vedas.
Ila (Sanskrit: इल) or Ilā (Sanskrit: इला) is a deity in Hindu legends, known for their sex changes. As a man, he is known as Ila or Sudyumna and as a woman, is called Ilā. Ilā is considered the chief progenitor of the Lunar dynasty of Indian kings – also known as the Aillas ("descendants of Ilā").
While many versions of the tale exist, Ila is usually described as a daughter or son of Vaivasvata Manu and thus the sibling of Ikshvaku, the founder of the Solar Dynasty. In versions in which Ila is born female, she changes into a male form by divine grace soon after her birth. After mistakenly entering a sacred grove as an adult, Ila is either cursed to change his/her gender every month or cursed to become a woman. As a woman, Ilā married Budha, the god of the planet Mercury and the son of the lunar deity Chandra (Soma), and bore him a son called Pururavas, the father of the Lunar dynasty. After the birth of Pururavas, Ilā has transformed into a man again and fathered three sons.
Tārā is the Hindu goddess of felicity and sanguineness. She is also known as the "Wisdom Goddess" in Nepal and Tibet. Tara is the consort of Hindu god Brihaspati, the god of planet Jupiter. According to some Puranas, Tara sired or mothered a child named Budha, the god of Mercury through Chandra and had a son named Kacha through Brihaspati.