 Airlangga was born from dynastic marriage between Isyana of Java and Warmadewa of Bali.His mother, queen Mahendradatta, was a princess of the Isyana Dynasty, the sister of king Dharmawangsa of Medang, while his father, king Udayana Warmadewa of Bali, was a king of the Balinese Warmadewa Dynasty.Bali in 11th century probably was an ally or vassal of Java, the marriage of Airlangga's parents was probably meant as political means to seal Bali as part of Medang's realm.