Boko Haram
https://en.wikipedia.org/wiki/Boko_Haram
Boko Haram ("Western education is forbidden"), officially called Wilāyat Gharb Ifrīqīyyah (Arabic: ولاية السودان الغربي, (Islamic State's) West Africa Province, ISWAP), and formerly called Jamā'at Ahl as-Sunnah lid-Da'wah wa'l-Jihād' (Arabic: جماعة أهل السنة للدعوة والجهاد, "Group of the People of Sunnah for Preaching and Jihad"), is a jihadist group based in northeastern Nigeria, also active in Chad, Niger and northern Cameroon. The group is led by Abubakar Shekau. Estimates of the group's membership varies between 7,000 and 10,000 fighters. The group initially had links to al-Qaeda, but in 2014, it expressed support for the Islamic State of Iraq and the Levant before pledging formal allegiance to it in March 2015.
Mohammed Yusuf (Boko Haram)
https://en.wikipedia.org/wiki/Mohammed_Yusuf_(Boko_Haram)
Mohammed Yusuf (29 January 1970 – 30 July 2009), also known as Ustaz Mohammed Yusuf, was a Nigerian Muslim sect leader. He was born in Girgir village, in Jakusko, present day Yobe State, Nigeria. He founded the militant Islamist group Boko Haram in 2002 and was its spiritual leader until he was killed in the 2009 Boko Haram uprising. The group's official name is "Jama'atu Ahlis Sunna Lidda'awati wal-Jihad", which in Arabic means "People Committed to the Propagation of the Prophet's Teachings and Jihad"
Yusuf had four wives and 12 children.
According to the University of California at Santa Cruz's Paul Lubeck, Yusuf received instruction in Salafism and was strongly influenced by Ibn Taymiyyah.
In a 2009 BBC interview, Yusuf stated his belief that the concept of a spherical Earth is contrary to Islamic teaching and should be rejected, along with Darwinian evolution, and the concept of rain originating from water evaporated by the sun. In the interview he said:
"There are prominent Islamic preachers who have seen and understood that the present Western-style education is mixed with issues that run contrary to our beliefs in Islam," he said.
"Like rain. We believe it is a creation of God rather than an evaporation caused by the sun that condenses and becomes rain.
"Like saying the world is a sphere. If it runs contrary to the teachings of Allah, we reject it. We also reject the theory of Darwinism."
Ibn Taymiyyah
https://en.wikipedia.org/wiki/Ibn_Taymiyyah
Taqî ad-Dîn Aḥmad ibn Taymiyyah (Arabic: تقي الدين أحمد ابن تيمية) known as Ibn Taymiyyah (22 January 1263 - 26 September 1328) was a Islamic scholar (alim), theologian and logician. He lived during the troubled times of the Mongol invasions. He was a member of the school founded by Ahmad ibn Hanbal, and is considered by his followers, along with Ibn Qudamah, as one of the two most significant proponents of Hanbalism. In the modern era, his adherents often refer to the two as "the two sheikhs" and Ibn Taymiyyah in particular as "Sheikh ul-Islam". Ibn Taymiyyah sought the return of Sunni Islam to what he viewed as earlier interpretations of the Qur'an and the Sunnah, and is considered to have had considerable influence in contemporary Wahhabism, Salafism, and Jihadism. He is renowned for his fatwa (takfir) issued against the Mongol rulers declaring jihad by Muslims against them compulsory, on the grounds that they did not follow Sharia and as such were not Muslim, their claims to have converted to Islam notwithstanding. His teachings had a profound influence on Muhammad ibn Abd al-Wahhab, and other later Sunni scholars
Ahmad ibn Hanbal
https://en.wikipedia.org/wiki/Ahmad_ibn_Hanbal
Aḥmad bin Muḥammad bin Ḥanbal Abū ʿAbd Allāh al-Shaybānī (780–855 CE / 164–241 AH) (Arabic: احمد بن محمد بن حنبل ابو عبد الله الشيباني) was an important Muslim scholar and theologian. He is considered the founder of the Hanbali school of Islamic jurisprudence. Ibn Hanbal is one of the most celebrated Sunni theologians, often referred to as "Sheikh ul-Islam," honorifics given to the most esteemed doctrinal authorities in the Sunni tradition. Ibn Hanbal personified the theological views of the early orthodox scholars, including the founders of the other extant schools of Sunni fiqh. Hanbal was a strong spokesman for the usage of hadiths
Ahmad ibn Hanbal's family was originally from Basra, Iraq, and belonged to the Arab Banu Shayban tribe. His father was an officer in the Abbasid army in Khurasan and later settled with his family in Baghdad, where Ahmad was born in 780 CE.
Ibn Hanbal had two wives and several children, including an older son, who later became a judge in Isfahan https://en.wikipedia.org/wiki/Isfahan
Hanbali
https://en.wikipedia.org/wiki/Hanbali
The Hanbali school (Arabic: المذهب الحنبلي) is one of the four orthodox Sunni Islamic schools of jurisprudence (fiqh). It is named after the Iraqi scholar Ahmad ibn Hanbal (d. 855), and was institutionalized by his students. The Hanbali madhhab is the smallest of four major Sunni schools, the others being the Hanafi, Maliki and Shafi'i.
Hanbali school derives Sharia predominantly from the Quran, the Hadiths (sayings and customs of Muhammad), and the views of Sahabah (Muhammad's companions). In cases where there is no clear answer in sacred texts of Islam, the Hanbali school does not accept jurist discretion or customs of a community as a sound basis to derive Islamic law, a method that Hanafi and Maliki Sunni fiqhs accept. Hanbalis rely instead on weaker Hadiths, individual opinions of Muhammad's companions or analogy.
Hanbali school is the strict traditionalist and most conservative school of jurisprudence in Sunni Islam. It is found primarily in Saudi Arabia and Qatar, where it is the official fiqh. Some Hanbali followers are also found in the four emirates of UAE (Sharjah, Umm al-Quwain, Ras al-Khaimah and Ajman), Bahrain, Oman and Yemen. The Hanbali school was the forerunner of the Wahhabi-Salafist movement. Historically the school was small; during the 18th to early-20th century Muhammad ibn Abd al-Wahhab and Al Saud greatly aided its propagation in Saudi Arabia
Al-Shafi‘i
https://en.wikipedia.org/wiki/Al-Shafi‘i
Abū ʿAbdullāh Muhammad ibn Idrīs al-Shāfīʿī (Arabic: ابو عبدالله محمد بن إدريس الشافعيّ) A Muslim jurist, who lived from (767 — 820 CE / 150 — 204 AH). Often referred to as 'Shaykh al-Islām' he was one of the four great Imams of which a legacy on juridical matters and teaching eventually led to the Shafi'i school of fiqh (or Madh'hab) named after him. Hence he is often called Imam al-Shafi‘i.
Al-Shāfi‘ī belonged to the Qurayshi clan Banu Muttalib which was the sister clan of the Banu Hashim to which the Prophet Muhammad and the Abbasid caliphs belonged. Hence he had connections in the highest social circles, but he grew up in poverty.
Al-Shāfi‘ī moved to Medina in his quest to learn Islam, as was the tradition of acquiring knowledge. There, he was taught by the famous Imam Malik ibn Anas. He memorized Muwatta Imam Malik at a very early age, where by Imam Malik was very impressed with his memory and knowledge
https://en.wikipedia.org/wiki/Malik_ibn_Anas