Muḥammad ibn 'Abdallāh Hassan was a Somali religious, political, and military leader who founded and headed the Dervish movement, which led a Holy war against British, Italian, and Ethiopian intrusions in the Horn of Africa. Due to his successful completion of the Hajj to Mecca, his complete memorization of the Quran and his purported descent from the Islamic prophet Muhammad, his name is sometimes preluded with honorifics such as Hajji, Hafiz, Emir or Sayyid. He was famously known by the British Empire as the Mad Mullah. In 1917, the Ottoman Empire referred to Hassan as the "Emir of the Somali". His influence led him to being regarded as the “Father of Somali nationalism”.

Sultan Nur Ahmed Aman, was a learned religious leader and the 5th Sultan of the Habr Yunis Sultanate and later also one of the leaders behind the Somali Dervish movement and revolt (1899–1920). He was the principal agitator rallying the followers of the Kob Fardod Tariqa behind his anti-French Roman Catholic Mission campaign that would become the cause of the Dervish uprising. He assisted in assembling men and arms and hosted the revolting tribesmen in his quarter at Burao in August 1899, declaring the Dervish rebellion. He fought and led the war throughout the years 1899–1904. He and his brother Geleh Ahmed were the main signatories of the Dervish peace treaty with the British, Ethiopians and Italian colonial powers on March 5, 1905, known as the Ilig Treaty or the Pestalozza agreement. Sultan Nur is entombed in a white-domed shrine in Taleh, the location of the largest Dervish forts and the capital of the Dervish from 1912 to 1920, a testimony to his contribution in creating the movement.