King Abdul-Aziz of Saudi Arabia (1876 – 9 November 1953) (Arabic: عبد العزيز آل سعود‎ ‘Abd al-‘Azīz Āl Su‘ūd) was the first monarch of Saudi Arabia, the third Saudi State. He was usually called Ibn Saud in English-speaking countries.

Beginning with the reconquest of his family's ancestral home city of Riyadh in 1902, he consolidated his control over the Najd in 1922, then conquered the Hijaz in 1925. Having conquered almost all of central Arabia, he united his dominions into the Kingdom of Saudi Arabia in 1932. As King, he presided over the discovery of petroleum in Saudi Arabia in 1938 and the beginning of large-scale oil exploitation after World War II. He was the father of many children having 45 sons, including all of the subsequent kings of Saudi Arabia.

Abdul-Aziz was born in 1876 in Riyadh, in the region of Najd in central Arabia.

In 1890, the Al Rashid conquered Riyadh. Abdul-Aziz was 15 at the time. He and his family initially took refuge with the Al-Murrah, a Bedouin tribe in the southern desert of Saudi Arabia. Later, the Al Sauds moved to Kuwait.

Muhammad ibn ʿAbd al-Wahhab (1703 – 22 June 1792) (Arabic: محمد بن عبد الوهاب‎) was an Arabian Islamic theologian and founder of the Salafi movement whose pact with Muhammad bin Saud helped to establish the first Saudi state and began a dynastic alliance and power-sharing arrangement between their families which continues to the present day. The descendants of Ibn ʿAbd al-Wahhab, the Al ash-Sheikh, have historically led the ulama in the Saudi state, dominating the state's clerical institutions.

Ibn ʿAbd al-Wahhab is generally acknowledged to have been born in 1703 into the Arab tribe of Banu Tamim in 'Uyayna, a village in the Najd region of the modern Saudi Arabia.

He was thought to have started studying Islam at an early age, primarily with his father, ʿAbd al-Wahhab as his family was from a line of scholars of the Hanbali school of jurisprudence.

Ibn ʿAbd al-Wahhab spent some time studying with Muslim scholars in Basra (in southern Iraq) and it is reported that he traveled to the Muslim holy cities of Mecca and Medina to perform Hajj and study with the scholars there.

Muhammad ibn Saud (Arabic: محمد بن سعود ‎) (d. 1765), also known as Ibn Saud, was the emir of Al-Dir'iyyah and is considered the founder of the First Saudi State and the Saud dynasty, which are technically named for his father – Saud ibn Muhammad ibn Migrin. Ibn Saud's family (then known as the Al Migrin) traced its descent to the tribe of 'Anizzah but, despite popular misconceptions, Muhammad ibn Saud was neither a nomadic bedouin nor was he a tribal leader. Rather, he was the chief (emir) of an agricultural settlement near modern-day Riyadh.

The initial power base was the town of Ad-Dar'iyah, where he met Muhammad ibn Abdul-Wahhab, who came to Ibn Saud for protection. Muhammad ibn Saud granted this and the two decided to work together to implement Ibn Abdel Wahhab's ideas of purifying Islam from innovations (heresies) in the practice of Islam by bringing the religion back to its purest form. They formed an alliance in 1744 which was formalized by the wedding of Muhammad bin Abdul-Wahhab's daughter to Abdul Aziz, son and successor of Ibn Saud. Thereafter, the descendants of Muhammad bin Saud and the descendants of bin Abdul-Wahhab, the Al ash-Sheikh, have remained closely linked.

Khaled bin Sultan (Arabic: خالد بن سلطان بن عبد العزيز آل سعود) is the deputy minister of Defense and a member of House of Saud.

Prince Khalid was born in 1949. He is the eldest son of the late Crown Prince Sultan and full brother of Fahd bin Sultan, Faisal bin Sultan and Turki bin Sultan. Their mother is Moneera bint Abdul Aziz bin Mousad al Saud. She died in Paris in August 2011. Moneera bint Abdulaziz was sister of Alanoud, who was spouse of King Fahd and she was also cousin of King Khalid and Prince Muhammed.

Khalid bin Sultan is a graduate of King Saud University. He then attended the Royal Military Academy Sandhurst and the US Army's Command and General Staff College at Fort Leavenworth in Kansas. He graduated from the Air War College at Maxwell Air Force Base in Alabama.

In the first years as a soldier, despite his choice to be selected for Special Forces personnel, Khalid bin Sultan was given a command of an artillery platoon in Tabuk. Later, his position advanced as he was given a task for conducting contract and purchasing of Saudi Arabia's first guided missile with People's Republic of China. For this prominence role, he was given a honorary title "Father of Saudi Arabia's Missile".

Sultan Al-Saud is a football player for Al-Hilal in the Saudi Premier League.