 The premature death of Pratap Singh Shah (reigned 1775–77), the eldest son of Prithvi Narayan Shah, left a huge power vacuum that remained unfilled for decades, seriously debilitating the emerging Nepalese state.Pratap Singh Shah's successor was his son, Rana Bahadur Shah (reigned 1777–99), aged two and one-half years at his accession.The acting regent until 1785 was Queen Rajendralakshmi, followed by Bahadur Shah (reigned 1785–94), the second son of Prithvi Narayan Shah.