At the Assembly of Narbonne in 849, Aleran and Isembart were empowered to consolidate the territory for the Frankish Kingdom and bring the Hispanic Marches held by rebel forces loyal to Pepin II back into control of the kingdom.
At the Assembly of Narbonne in 849, Aleran and Isembart were given the task of uniting the Frankish Kingdom's lands and retaking control of the Hispanic Marches from those loyal to Pepin II.