In the Thapa genealogy, he is also accredited to have ruled over Doti from Kāndāmalika. The genealogy claims that he was son of fictitious Kshatriya named Vatsaraja () born from Ashwamedha Yagya (holy fire) and fictitious Vasundhara Devi, daughter of fictitious Kanyakubji Rajput chief Radha Madhav Rajput. The genealogy claims Vatsaraja to be giant sized and thus achieving title of "Abhaya Narsingh Maharaja" and his son Kalu Thapa achieving title of "Abhaya Narsingh Kumar". The genealogy traces the lineage of all Bagale Thapas to a male progenitor ("Mūlapuruṣa") King Kalu Thapa Kshatri, who first ascended to the throne at Kāndāmālikā on Saka Era 1111. 