Najahids

Najahid dynasty Banū Najāḥ بنو نجاح
Country	Yemen (Zabid)
Titles	Emir
Founded	1050
Founder	Najah Nasiru ed-Din
Final ruler	al-Fatiq III
Dissolution	1158

Najahid dynasty (Arabic: بنو نجاح‎‎; Banū Najāḥ) was a slave dynasty of Abyssinian origin founded in Zabid in the Tihama (lowlands) region of Yemen around 1050 AD. They faced hostilities from the Highlands dynasties of the time, chiefly the Sulayhids. Their last sovereign was killed by the Mahdids in 1158.

The last Ziyadid king died in 1018, leaving a child behind. The guardianship of the child was assumed by an Abyssinian eunuch named al-Hussien ibn Salama. Al-Hussein ibn Salamah saved the Ziyadid Dynasty from total collapse after a devastating attack led by a highland emir named Abdullah ibn Qahtan in 989. Ibn Salama recovered the original limits of the Ziyadid kingdom from Haly (present day Saudi Arabia) to Aden, He exercised the office of vizier and had two Abyssinian slaves whom he had appointed them to administration of affairs. One bore the name of Nafis and the other was named Najah, founder of what became to be known as the Najahid Dynasty. Nafis killed the child king of the Ziyadid dynasty. The murdered king was the last of his race. With him the Arab dynasty of Banu Ziyad came to an end in Tihama, and their power passed into the hands of their slaves. Najah, on hearing of the treatment his master had undergone at the hands of Nafis, marched toward Zabid and killed Nafis by immuring him in a wall in 1050. He adopted the use of royal umbrella and struck the coinage in his name. Najah lost Aden to the Banu Ma'an Dynasty, only Zabid remained under his possession. Being of an Abyssinian slave origin, Najah was not recognized as a sovereign by the tribal elements in the Yemeni highlands. He belonged to an ancient Abyssinian tribe called "Jazal".

...
Wikipedia