Lunkaran was born on 12 January 1470, a younger son of Rao Bika, the eponymous founder of the kingdom of Bikaner.
His mother, Bhatiyani Rani Rang Kanwar, was the daughter of Rao Shekha, the Bhati ruler of Pugal.
[2] The following year, he defeated the Khanzada ruler of Nagaur in battle[1] and also conquered extensive territory from Chayal Rajputs near Hisar and Sirsa.
When chided by a noble visiting from Bikaner, the Rawal mocked them further by stating that he would bestow to the Brahmins of his kingdom as much land as the Rathors could ride over.
He only lifted the assault and released the captive king after the latter pledged to give his daughter in marriage to one of Lunkaran's sons.