This paper discusses the use and manufacture of prophetic and royal genealogies in history writing to legitimize the rule of the Delhi Sultans (1200-1400). Historians of the period (Fakhr-i Mudabbir, Hasan Nizami, Minhaj-i Siraj Juzjani and Ziya al-Din Barani) crafted royal genealogies based on prophets such as Adam, Abraham and Moses while simultaneously drawing from the heritage of Persian kings of legend such as Jamshid and those from pre-Islamic Persian dynasties like the Sasanian kings. This paper attempts to answer two questions. How were genealogical narratives woven into the authority of the Delhi Sultanate? What discourses of power were embedded in the concept of genealogy?