-BBC
Vijaya, 18, and her husband, Udai Pal Singh, were killed by her family after they found out about the marriage, the court in Etah district heard.
The groom’s brother was also killed.
India’s Supreme Court recently said so-called honour killers should face the death penalty. It is carried out only in the rarest of cases in India.
The BBC’s Ram Dutt Tripathi in Lucknow says hundreds of young Indians are killed every year for falling in love.
Parents in India still prefer arranged marriages within their own caste and religion, our correspondent says.