Abdulaziz bin Abdul Rahman bin Faisal bin Turki bin Abdullah bin Mohammed bin Saud, known in the Western world mononymously as Ibn Saud, was an Arab political and religious leader who founded Saudi Arabia – the third Saudi state – and reigned as its first king from 23 September 1932 until his death in 1953. He had ruled parts of the kingdom since 1902, having previously been Emir, Sultan, and King of Nejd, and King of Hejaz.
The House of Al Saud is the ruling royal family of Saudi Arabia. It is composed of the descendants of Muhammad bin Saud, founder of the Emirate of Diriyah, known as the First Saudi State (1727–1818), and his brothers, though the ruling faction of the family is primarily led by the descendants of Abdulaziz bin Abdul Rahman, the modern founder of Saudi Arabia. It forms a subtribe of the larger prominent ancient Banu Hanifa tribe of Arabia, from which well known 7th century Arabian theologist Maslama ibn Ḥabīb originates. The most influential position of the royal family is the King of Saudi Arabia, an absolute monarch. The family in total is estimated to comprise 15,000 members; however, the majority of power, influence and wealth is possessed by a group of about 2,000 of them. Some estimates of the royal family's wealth measure their net worth at $1.4 trillion. This figure includes the market capitalization of Saudi Aramco, the state oil and gas company, and its vast assets in fossil fuel reserves, making them the wealthiest family in the world and the wealthiest in recorded history.
Abdul Rahman bin Faisal Al Saud was the last emir of Nejd, reigning from 1875 to 1876 and from 1889 to 1891. He was the youngest son of Emir Faisal bin Turki bin Abdullah and the father of Abdulaziz, the founder of the Kingdom of Saudi Arabia.
The Rashidi dynasty, also called Al Rashid or the House of Rashid, was a historic Arabian House or dynasty that existed in the Arabian Peninsula between 1836 and 1921. Its members were rulers of the Emirate of Ha'il and the most formidable enemies of the House of Saud, rulers of the Emirate of Nejd. They were centered in Ha'il, a city in northern Najd that derived its wealth from being on the route of the Hajj pilgrimage to Mecca, and was also a commercial center. The rulers of Ha'il were the sons of Abdullah bin Rashid, founder of the dynasty.
Faisal bin Turki Al Saud was the second ruler of the Second Saudi State and seventh head of the House of Saud.
The Emirate of Nejd or Imamate of Nejd, also known as the second Saudi state was existing between 1824 and 1891 in Nejd, the regions of Riyadh and Ha'il of what is now Saudi Arabia. Saudi rule was restored to central and eastern Arabia after the Emirate of Diriyah, the first Saudi state, having previously been brought down by the Ottoman Empire's Egypt Eyalet in the Ottoman–Wahhabi War (1811–1818).
Saud bin Faisal Al Saud, also known as Imam Saud, (1833—1875) was the ruler of the Second Saudi State in 1871 and 1873–75. He joined alliances with foreign tribes and revolted against his half-brother Abdullah. His rule was short-lived and Abdullah overthrew him. Saud gained power again in 1873 but died two years later. His reign was notable for the infighting in the House of Saud which he initiated.
Saud Al Kabeer bin Abdulaziz Al Saud was a grandson of Saud bin Faisal bin Turki and a distant nephew and important supporter of King Abdulaziz, founder of Saudi Arabia. Prince Saud was one of the most known Najdi people. Through his marriages he was the brother-in-law, and later a son-in-law, of King Abdulaziz. Saud was married for 45 years to King Abdulaziz's eldest sister Noura bint Abdul Rahman, and after her death in 1950 he married the King's daughter Princess Hessa.
Abdullah bin Jiluwi Al Saud was one of the early Saudi governors.
Muhammad bin Abdul Rahman Al Saud was an Arabian soldier and politician who played a role in the conquests of his half-brother Abdulaziz that led to the formation of the Kingdom of Saudi Arabia.
The Unification of Saudi Arabia was a military and political campaign in which the various tribes, sheikhdoms, city-states, emirates, and kingdoms of most of the central Arabian Peninsula were conquered by the House of Saud, or Al Saud. Unification started in 1902 and continued until 1932, when the Kingdom of Saudi Arabia was proclaimed under the leadership of Abdulaziz, known in the West as Ibn Saud, creating what is sometimes referred to as the Third Saudi State, to differentiate it from the Emirate of Diriyah, the First Saudi State and the Emirate of Nejd, the Second Saudi State, also House of Saud states.
The Battle of Riyadh was a minor battle in Riyadh, then part of the Emirate of Ha'il, fought between the Rashidi dynasty and the House of Saud in January 1902 that resulted in the latter's takeover of walled town by Abdul-Aziz Ibn Saud. The battle is considered a prelude to the 30-year old unification war, culminating in the establishment of Saudi Arabia in 1932.
The Battle of Rawdat Muhanna was a major battle of the Saudi–Rashidi War, during the unification of Saudi Arabia, fought between the Rashidi dynasty and Saudi rebels. It occurred on 12 April 1906, in Muhanna's Gardens in Qassim region. After Ibn Saud's victory in Battle of Shinanah, Abdulaziz bin Mithab, better known as Ibn Rashid, planned to forge a new alliance with Qassimi leaders. Ibn Saud sent his troops under the command of Ibrahim Ibn Aqeel to destroy this alliance before it grew. Ibn Aqeel's troops killed Ibn Rashid in the battle along with hundreds of his Qassimi and Ottoman allies. Ibn Saud's victory in this battle ended the Ottoman presence in Nejd and Qassim by the end of October 1906.
The Emirate of Jabal Shammar, also known as the Emirate of Haʾil or the Rashidi Emirate, was a state in the northern part of the Arabian Peninsula, including Najd, existing from the mid-nineteenth century to 1921. Shammar had been a confederation in the Arabian Peninsula. Jabal Shammar in English is translated as the "Mountain of the Shammar". Jabal Shammar's capital was Ha'il. It was led by the monarchy of the Rashidi dynasty. It included parts of modern-day Saudi Arabia, Iraq, and Jordan.
Musa'id bin Abdulaziz Al Saud was the twelfth son of King Abdulaziz, the founder of Saudi Arabia. He was a businessman and the father of Faisal bin Musaid, the assassin of his half-brother King Faisal.
The Crown Prince of Saudi Arabia is the second-most important position in Saudi Arabia, second to the King, and is his designated successor. Currently, the Crown Prince assumes power with the approval of the Allegiance Council after he is nominated by the King. This system was introduced to the country during the reign of King Abdullah. In the absence of the King, an order is issued to have the Crown Prince manage the affairs of the state until the King's return.
Abdullah bin Ali Al Rashid was the founder of the Emirate of Jabal Shammar. He founded the Emirate in 1836 and ruled it until 1848. He was called Sheikh due to his noble lineage and military ability.
Abdullah bin Faisal Al Saud was one of the rulers of the Emirate of Najd, also known as Second Saudi State. His reign witnessed extensive struggle among the members of the Al Saud family which led to turmoil in the region.
Muhammad bin Abdullah Al Rashid was one of the Emirs of Jabal Shammar and is known for defeating the Saudi State in the battle of Mulayda which ceased to exist for a second time in 1891. His reign lasted from 1869 to 1897, and he was the most influential ruler of the Emirate of Jabal Shammar for which he is called Muhammad the Great.
The Declaration of theUnification of Saudi Arabia was officially announced by Prince Faisal bin Abdulaziz, the Viceroy of Hejaz on behalf of King Abdulaziz ibn Saud on September 23, 1932, at 9:00 am from al-Hamidiyah Palace in Mecca. Faisal read out the Royal Decree No. 2716 issued by Abdulaziz ibn Saud on September 18, 1932, that renamed the Kingdom of Hejaz and Nejd and its annexes as the Kingdom of Saudi Arabia.
Al-Muntafiq Union 
Muḥammad bin ʿAbdullah Al Rashid 
Hassan ibn Muhanna 
