Wikipedia
Devasena is a Hindu goddess and the first wife of the god Kartikeya, also known as Murugan in South Indian traditions. She is known as Devayanai, Deivanai or Deivayanai in south-Indian texts. Her name is also spelled as Teyvanai or Tevayanai .
Devasena is often described as the daughter of Indra, the king of the gods. She is betrothed to Kartikeya by Indra, when he becomes the commander-in-chief of the gods. In south-Indian accounts, Devasena is generally depicted as an antithesis of Valli, her co-wife; together they complete the god. Devasena is generally depicted with Kartikeya and often is also accompanied by Valli.
Devasena does not enjoy independent worship, but is worshipped as Kartikeya's consort in most of his temples. She plays a greater role in the Tirupparankunram Murugan Temple, believed to be the site of her marriage.
Devasena was a king of the Vatsagulma branch of the Vakataka dynasty. He was succeeded by his son Harishena who was notable for his patronage of the Ajanta caves. His daughter was wed to the Vishnukundin monarch, Madhavavarman II Janashraya.
Cave 16 at Ajanta credits Varahadeva, a minister of Harishena, as its patron and records the genealogy of Harishena as well as a description of Varahadeva and his father, Hastibhoja. As Varahadeva served his king, Hastibhoja served Devasena. Hastibhoja was entrusted with the responsibility of administering the kingdom while Devasena contented himself with the pursuit of pleasure.
The Hisse-Borala stone inscriptions note that a tank named Sudarshana was created by a Svamilladeva, an official under Devasena.