King Prithvi Narayan sent Kaji
Vamsharaj Pande,
Naahar Singh Basnyat, Jeeva Shah, Ram Krishna Kunwar and others to defeat the forces of
Gurgin Khan at Makwanpur. Ram Krishna was ordered by the King to organize the army at Makwanpur under his control. In a letter to Ramkrishna, King Prithvi Narayan Shah was unhappy at the death of Kaji
Kalu Pande and thought it was impossible to conquer
Kathmandu Valley after the death of Kalu Pande. After the annexation of Kathmandu Valley, King
Prithvi Narayan Shah praised in his letter about valour and wisdom shown by Ramkrishna in annexation of Kathmandu, Lalitpur and Bhaktapur (i.e. Nepal valley at the time) on 1768-69 A.D. The letter sent by King
Prithvi Narayan Shah to Ramkrishna Kunwar on Ashwin Badi 5 of unknown
Vikram Year has been mentioned by historian
Baburam Acharya The Gorkhali monarch also expresses condolence in that letter over the death of one of the brothers of Ram Krishna in the battle of Timal. Another index letter sent by King
Rana Bahadur Shah to Jaya Krishna Kunwar in 1843 Vikram Samvat (i.e. 1786 A.D.) confirms that Jaya Krishna did not die in the battle of Timal which could point to the death of his youngest brother Amar Singh Kunwar in the battle of Timal. When Ram Krishna was conferred the confiscated properties (including residence) of former Kathmandu King
Jaya Prakash Malla, he donated the properties to "Guthi" for supplying foods to pilgrims in
Shivaratri festival. King
Prithvi Narayan Shah had deployed
Sardar Ram Krishna to the invasion of
Kirant regional areas comprising; Pallo Kirant (
Limbuwan), Wallo Kirant and Majh Kirant (Khambuwan). In 13th of Bhadra 1829
Vikram Samvat (i.e. 29 August 1772), Ram Krishna crossed
Dudhkoshi river to invade King Karna Sen of. Majh Kirant (Khambuwan) and Saptari region with fellow commander
Abhiman Singh Basnyat. He crossed
Arun River to reach
Chainpur(
Limbuwan). Later, he achieved victory over Kirant region. King Prithvi Narayan Shah bestowed 22 pairs of Shirpau (special headgear) in appreciation to Ram Krishna Kunwar after his victory over the Kirant region. Genealogist Daniel Wright contends that Ram Krishna died at Pyuthan at the age of 59. ==Rana dynasty==