Duchy of Tridentum
The separate Lombard duchy of Brescia was united with Tridentum in the person of Alagis , a fervent Arian and opponent of the Lombard king , Perctarit , who was killed in the battle of Cornate d'Adda ( 688 ) . 
<triplet> Alagis <subj> Cornate d'Adda <obj> place of death