(the brother of the first emir), he was criticized because he ignored the ahd (covenant) between his grandfather and the first emir. He was unsuccessful in fighting Ibn Saud, and was killed by his own brothers. Saʿūd bin Hammūd (), (1908–10). Another grandson of Ubayd. Saʿud was killed by the maternal relatives of Saʿud bin ʿAbd al-ʿAziz, the 10th emir. Saud bin Abdulaziz (), (1910–20). A boy of 10 when he was made emir, his maternal relatives of the Al Sabhan family ruled as regents on his behalf until he came of age, based on the constitution of Emara. In 1920, he was assassinated by his cousin, Abdullah bin Talal (a brother of the 12th emir). Two of his widows remarried: Norah bint Hammud Al Sabhan became Ibn Saud's eight wife, and Fahda bint Asi bin Shuraim Al Shammari of the Abde section of the Shammar tribe became Ibn Saud's ninth wife and the mother of King Abdullah of Saudi Arabia. ʿAbdullah bin Mutʿib (), (1920–21). A son of the 7th emir, he surrendered to Ibn Saud, he was 20 years old. Despite of that, he was one of the key factor of Hail Emara deterioration. Muhammad bin Talāl (), (1921). A grandson of Naif, the only surviving son of Talal, the second emir. Muhammad bin Talal's wife Nura bint Sabhan from the Al Sabhan family married to King Abdulaziz after he was imprisoned by him. Surrendered to Ibn Saud. One of the daughters of Muhammad bin Talal, Watfa, married Prince Musa'id bin Abdulaziz Al Saud, the twelfth son of Ibn Saud. Prince Musa'id and Watfa became the parents of Prince Faisal bin Musa'id, the assassin of King Faisal. There has been a tendency to attribute the development of the House of Rashid to trading and commercial expansion, but documents have come to light which emphasise the significance of external pressures and the Rashidi's interaction with foreign governments and leaders, but Al Sauds are equally said of the same thing which catapulted them to power. See also List of Sunni Muslim dynasties Unification of Saudi Arabia References Further reading Many foreign travellers visited the Rashidi emirs at Ha'il and described their impressions in journals and books, including: Georg August Wallin. (1854). Narrative of a Journey from Cairo to Medina and Mecca, by Suez, Arabia, Tawila, al-Jauf, Jublae, Hail and Negd in 1845, Journal of the Royal Geographical Society 24: 115-201.