Prince Vijaya
In "Mahavamsa" poem of Sri Lanka, a local population is given the term Yakkhas. Prince Vijaya encountered the royalty of the yakkhas' queen, Kuveni, in her capital of Lanka pura, and conquered them. The Yakkhas served as loyal subjects with the House of Vijaya and the yakkha chieftain sat on equal height to the Sri Lankan leaders on festival days.