 In 867 a force led by Cennétig and Máel Ciaráin mac Rónáin burned Amlaíb's fortress at Clondalkin, near Dublin, and killed 100 of his followers.They followed this up with a successful attack on Dublin itself in the same year, in which Odolb Micle was killed.This shadowy figured may have been Amlaíb and Ímar's regent.