Rana Bahadur Shah
Rana Bahadur Shah, King of Nepal  (1775–1806) was the King of Nepal from 1777 to 1806.
In 1777, he succeeded to the throne after the death of his father, King Pratap Singh Shah.
He ruled under the regencies of his mother, Queen Rajendra Rajya Lakshmi Devi (died on 13 July 1785 from tuberculosis), and then of his uncle, Bahadur Shah.
During this time, the kingdom expanded by conquest to include the Garhwal and Kumaon regions, now part of India.
He sent his uncle Bahadur Shah to jail, who later died in jail.
Trailokya, Crown Prince of Nepal
General Crown Prince Trailokya Bir Bikram Shah Deva (November 30, 1847 – March 30, 1878) was, as the eldest son of King Surendra of Nepal, the heir apparent to the throne of Nepal.
He died before his father, and his son Prithvi ascended the throne.
Kantavati Devi
Kantavati Devi( Kantawati Devi Jha)(? – 31 October 1799) was the favourite wife of Rana Bahadur Shah, King of Kingdom of Nepal.
She was the mother of Girvan Yuddha Bikram Shah.
She died of smallpox.
Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.
Chautariya Pushkar Shah
Chautariya Pushkar Shah( August 16, 1784 – 1841) was the prime minister( Mukhtiyar) of Nepal from August 1838 to early 1839.
He previously served as the Governor of Doti from 1831 to 1837, and as Special Ambassador to China from 1837 to 1838.
He was the counselor of state from 1840 to 1843.
Pushkar Shah had four sons: Sri Chautaria
Bhim Bikram Shah, Rana Bikram Shah, Colonel Sri Chautaria Bir Bikram Shah, and Colonel Ambar Bikram Shah.
Girvan Yuddha Bikram Shah
Girvan Yuddha Bikram Shah  (19 October 1797 – 20 November 1816), also called Girvanyuddha Bikrama Shah, was fourth King of Nepal from 1799 to 1816.
Although he was not the legitimate heir to the throne his father made him the heir for being the son of his favourite wife Kantavati Devi.
He was the son of King Rana Bahadur Shah, and ascended the throne at the age of 1 and 1/2 years when his father abdicated to become an ascetic.
He ruled under the regency of Queen Lalit Tripura Sundari and Prime Minister Bhimsen Thapa.
He died at age 19 and was succeeded by his young son Rajendra Bikram Shah.
Gorakshya Rajya Lakshmi Devi
Gorakshya Rajya Lakshmi Devi( 1798–16 December 1816) was the Queen of Girvan Yuddha Bikram Shah, King of Nepal.
She was the mother of Rajendra Bikram Shah.
She died of smallpox.
Dhirendra of Nepal
Dhirendra Bir Bikram Shah Deva of Nepal( 14 Jan 1950 – 1 June 2001) was the youngest son of King Mahendra of Nepal, and his first wife, Crown Princess Indra.
Subarna Prabha Devi
Subarna Prabha Devi( 1779 –?) was the Queen Regent of Girvan Yuddha Bikram Shah and second wife of King Rana Bahadur Shah of Nepal.
She was the mother of eldest Prince Ranodyat Bikram Shah, Prince Samarsher Shah and a princess.
She was daughter of Subudhi Khadka Basnyat.
Tjuyu
Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.
She is the grandmother of Akhenaten, and great grandmother of Tutankhamun.

Question: Who is Girvan Yuddha Bikram Shah's paternal grandmother?
Answer: Rajendra Rajya Lakshmi Devi