The Garhajis (Somali: Garxajis, Arabic: غرحجس, Full Name: Ismail (Garhajis) Shiekh Ishaaq ibn Ahmad) is a major sub-clan of the wider Isaaq clan. They are the traditional holders of the Isaaq Sultanate since the 18th century. Its members form a part of the Habar Magaadle confederation, and they contstitute the largest sub-clan of the Isaaq. The Garhajis are divided into two major sub-clans, the Habar Yunis and Eidagale. They are traditionally nomadic pastoralists, merchants and skilled poets. One of the earliest mentions of the Garhajis in Western literature was in the Journal of the Royal Geographical Society of London in 1848, where they are described as a powerful and warlike clan with an abundance of livestock reserves.
The first Habr Yunis chief to assume the title Sultan was Sugulleh Ainanshe of the Ismail Arrah clan, his father Ainanshe was a traditional chief. Sugulleh was succeeded by his son Diriyeh Sugule in the late 18th century. Sultan Diriyeh reigned for more than 50 years and was eventually succeeded by his grandson Hersi Aman. Hersi is most notable for expanding Habr Yunis territory in the Haud and for engaging the first Rer Sugulleh civil war which resulted in his death. Sultan Hersi's death caused a decade-long civil war when his nephew Nur was crowned Sultan and his great uncle Awad Sultan Deriyeh and eldest living son of sultan Deriyeh declared himself a rival sultan in 1881.The two Sultans were now at war with each other and divided the Kingdoms territory between themselves, with Nur being based in the Toyo plains and Awd establishing himself at Burao. In the 1890s Sultan Awad was killed in a battle which resulted in Sultan Nur facing no opposition and was the sole ruler of the Habr Yunis Sultanate up until he started the Dervish uprising, which resulted in his uncle Madar Hersi being crowned. The Habr Yunis were now divided into two factions: pro-Dervish and anti-Dervish, the former being ruled by Sultan Nur and the latter the newly crowned Sultan Madar. After Nur's death in the Dervish camp, the Habr Yunis elders crowned his son Dolal, and with the Dervish defeat none of his heirs succeeded him leaving Madar's descendants as the undisputed Sultans of the Habr Yunis.