Abdullah bin Abdulaziz Al Saud (Arabic: عبدالله بن عبدالعزيز آل سعود‎ ‎ , "‘Abd Allāh ibn ‘Abd al-‘Azīz Āl Sa‘ūd ", ] ; 1 August 1924 – 23 January 2015) was King of Saudi Arabia and Custodian of the Two Holy Mosques from 2005 to his death in 2015.
Faisal bin Turki I bin Abdulaziz Al Saud (Arabic: فيصل بن تركي الأول بن عبد العزيز آل سعود‎ ‎ , "Faisal bin Turkī l-ʾAwwal bin ʿAbd al-ʿAzīz Āl Saʿūd ") (1918–1968), was the sole child of Turki I bin Abdulaziz Al Saud.
 He served as minister of interior during the reign of King Saud and was first minister of labour and social affairs.
Muqrin bin Abdulaziz Al Saud (Arabic: مقرن بن عبدالعزيز آل سعود‎ ‎ ; born 15 September 1945) is a member of House of Saud who served as Crown Prince of Saudi Arabia from January to April 2015.
 He was Director General of Al Mukhabarat Al A'amah (Saudi Intelligence Agency) from 2005 to 2012.
 In July 2012, Muqrin was appointed King Abdullah's Advisor and Special Envoy with the rank of minister.
 On 1 February 2013, King Abdullah named him as Second Deputy Prime Minister, being the fifth Saudi royal to hold this position.
 This post was previously held by King Fahd, King Abdullah, Crown Prince Sultan, and Crown Prince Nayef.
 On 27 March 2014, he was named Deputy Crown Prince making him second in the line of succession behind his brother Salman bin Abdulaziz Al Saud.
 On 23 January 2015, upon King Abdullah's death and the accession of King Salman, Muqrin became Crown Prince and First Deputy Prime Minister.
 On 29 April 2015, King Salman replaced Prince Muqrin with Prince Muhammad bin Nayef as Crown Prince.
Salman bin AbdulAziz bin Salman bin Muhammad bin Saud bin Faisal (Arabic: الأمير سلمان بن عبد العزيز بن سلمان بن محمد بن سعود بن فيصل, Salmān bin ʿAbd al-ʿAzīz bin salman ʾĀl Saʿūd) (born 1980) is a member of the Saudi royal family.
 His mother is Princess Nouf Bint Abdullah bin Abdul Rehman al Saud and father is Prince Abdulaziz bin Salman bin Muhammad Al Saud.
 His grandfather is Salman bin Muhammad bin Saud.
Prince Khaled bin Talal bin Abdulaziz Al Saud (Arabic: الأمير خالد بن طلال بن عبد العزيز آل سعود‎ ‎ ) (born 10 January 1962) is a member of the Saudi Royal Family.
 The third son of Prince Talal bin Abdulaziz Al Saud and Princess Mona El Solh, daughter of Riad as-Solh, the first Prime Minister of Lebanon.
 He is full-brother of Prince Al Waleed bin Talal, and holds no official position in the Saudi government.
His Royal Highness Prince Abdulaziz bin Talal bin Abdulaziz Al Saud, known as Prince Abdulaziz bin Talal in the English media, is a Saudi Arabian prince and member of the House of Saud.
Prince Bader bin Saud bin Mohammed bin Abdulaziz bin Saud bin Faisal bin Turki Al Saud (born 27 November 1969), is a Saudi Public Affairs Writer under the nom de plume Bader bin Saud, Paratrooper Colonel at the Saudi Arabian Ministry of Interior, and previously president of the Saudi Students Clubs in the UK & Ireland.
 He is now the Deputy Commander of the Public Security Training City in Al Madinah Region, Kingdom of Saudi Arabia.
 His father is Prince Saud bin Mohammed Al Saud, and his mother Princess Alanoud bint Abdullah bin Abdulmohsen Alfirm.
 Two of his siblings are known poets, Prince and Dr Saad Al Saud, known as “Munadi,” (the caller).
 The other is Prince Abdulaziz bin Saud Al Saud, known as “Alsamir”, (the one who stays up all night) Prince Bader has six children - Prince Faisal, Prince Saud, Prince Khalid, Prince Fahad, Princess Reem and Princess Aljohara.
Abdulaziz bin Saud bin Nayef bin Abdulaziz Al Saud (Arabic: عبد العزيز بن سعود بن نايف بن عبد العزيز آل سعود‎ ‎ ; born November 4, 1983) is the Minister of Interior of Saudi Arabia since 21 June 2017.
 Prince Saud is a graduate of the Dhahran Ahliyyah School and King Saud University.
 After King Salman came to power, Abdulaziz was appointed as an adviser to the Royal Court in various departments and later served as an adviser in the Defense Ministry.
 He is the eldest son of Prince Saud bin Nayef (former Head of the Saudi Crown Prince Court) who is the eldest son of the former Crown Prince Nayef bin Abdulaziz.
Faisal bin Turki Al Faisal Al Saud (born 27 March 1975), titled Prince Faisal bin Turki Al Faisal Al Saud, most commonly referenced as Faisal bin Turki.
 He is the eldest son of Prince Turki bin Faisal Al Saud and brother of Red Bull athlete Prince Abdulaziz.
 He is a member of the House of Saud, the Saudi Arabia royal family.
 Similar to his father, Prince Faisal bin Turki studied International Relations at the Edmund A. Walsh School of Foreign Service at Georgetown University.
 Faisal also studied at Calvin College, American Intercontinental University and the London School of Economics and Political Science, obtaining an MSc in Environmental Policy Planning and Regulation.
Abdulaziz Bin Turki Bin Talal Bin Abdulaziz Al Saud (Arabic: عبدالعزيز بن تركي بن طلال بن عبدالعزيز آل سعود‎ ‎ ; born 6 December 1986) is a member of the House of Saud, a successful business entrepreneur and an investor.
 He was born in Los Angeles, raised in Riyadh and educated in Saudi Arabia, United States and the United Kingdom.
 He is a member of the Saudi Royal Family, grandson of late King Abdullah of Saudi Arabia and a nephew of the international business leader, Al-Waleed bin Talal.

Question: In what year did the grandfather of Abdulaziz Bin Turki Bin Talal Bin Abdulaziz Al Saud who was King of Saudi Arabia die?
Answer: 2015