Chandragupta I married which Licchavi princess and started which era?

Chandragupta I married the Licchavi princess Kumaradevi, an alliance celebrated on coins, and the Gupta Era beginning in 319–320 CE is conventionally connected with his accession. This question belongs to the Gupta and post-Gupta phase, a period reconstructed through inscriptions, coins, monuments, literary works, scientific texts and accounts of foreign travellers. A reliable answer must connect the named ruler, author, work, institution, title or event with the correct chronology and source. The Gupta age is often described as a classical or golden age because of important achievements in Sanskrit literature, temple architecture, sculpture, astronomy and mathematics, but the label should not conceal regional diversity or social and political change.