These two adventurers, consulting their mutual interest, coalesced, and having completely succeeded in seducing the people, by projects of reformation, Abdallah was proclaimed King of Morocco, and Abdul-Momen, the other imposter, General of the Faithful.  This haying effected the destruction of Brahem, he contrived to dispatch his colleague so privately as to avoid the imputation of being accessary to his death, and succeeded him in the sovereignty.  He demolished all the palaces and mosques of the Kings in Morocco, and laid the greater part of that city in ruins, it having shut its gates against him when, he presented himself before it; and he destroyed the young son of Brahem with his own hands.  He afterwards, however, rebuilt Morocco, and died in 1155, in possession of the sovereign power.

He was succeeded by his son Joseph, who passed over into Spain, and engaging with the armies of the Kings of Portugal and Leon, he was killed by a fall from his horse.  His son Abu-Jacob, surnamed Almonsor the Invincible, assumed the government, suppressed the divisions that distracted the country, and, rendered himself so powerful and formidable, that the Mahometan Kings in Spain elected him as their supreme ruler.  After performing numberless gallant exploits, he disappeared on a sudden, as some assert, to perform the pilgrimage to Mecca; but it is most probable, he was secretly murdered and buried by the descendants of Abdallah.  His son ascended the throne, but died in a very short time of grief, in consequence of his losses in Spain.  He was the last King of this family.

Abdallah, the Governor of Fez, of the tribe of Benimecius, usurped the crown of his master.  Of his successors, the only prince who took part in the Mahometan wars in Spain was Abul Hassen, who conquered Gibraltar, and built the fort which still retains the name of the Moorish Castle.  He was dethroned and assassinated by his son, Abul Hassen, a ferocious and ambitious tyrant, who left a son, named Abu-Said, of a very depraved character, in whose reign Ceuta, after a long siege, was taken by Don John, King of Portugal.

These usurpers were completely extirpated by the house of Merini, which family in its turn was overcome by Muley Mahomet, a Xeriffe of the same tribe, who seized the reins of government.  His successors did not long enjoy the fruit of their usurpation, but were most dreadfully disturbed by a series of revolutions and murders, fomented and perpetrated by the mountaineers, a resolute, ferocious, and restless people, who, after raising the various parts of the country in arms one against the other, and subjecting them to all the calamities of civil war, cruelly butchered Muley Achmet, the last of the sons of Muley Sidan and proclaimed their chief, Crom-el-Hadgy, a bloodthirsty ruffian, of low birth, and eminent in cruelties, in his stead.  This tyrant, to secure his new acquisition, inhumanly massacred all the male descendants of the Xeriffes.  He soon became the object of universal detestation, and was poignarded by his Sultana on the day of marriage.  She was of the family of the Xeriffes, and consented to marry him, only that she might have a better opportunity of sacrificing him to her revenge, for the murder of her family.