Ibn al-Aftas added to his name the Laqab al-Mansur Billah, Victorious by Grace of God, and ruled over an extensive part of the Al Garb Al Andalus, from the Douro river to the south of Tagus river, establishing the Taifa of Badajoz.
In 1055, Badajoz came under the suzerainty of the Kingdom of León-Castile and was forced to pay tribute.
Badajoz was taken at the end of 1095 by the Almoravid general Abu Bakr, with the connivance of the inhabitants who were fed up of the fiscal exactions of their emir, Umar ibn Muhammad al-Mutawakkil.
Al-Mutawakkil and two of his sons Al-Fadl and S'ad, were taken prisoner and sent to Seville, but were executed before their arrival, which was eulogized in a poem by Ibn 'Abdun.
[3] Another son of Al-Mutawakkil, Al-Mansur, escaped and fortified himself for some time in the castle of Montanchez, in the modern province of Caceres, and finally together with his followers, migrated into the dominions of Alfonso VI, where he abandoned Islam for Christianity.