Complex sentence: For armour, the gallowglass wore chain mail shirts over padded jackets and iron helmets on the head; he was usually accompanied by two boys, one of whom carried his javelins or throwing spears while the other carried his provisions.
Split into simpler sentences: For armour, the Gallowglass wore chain mail shirts over padded jackets and iron helmets on the head. The Gallowglass soldier was usually accompanied by two boys, one of whom carried his javelins or throwing spears, the other carried his provisions.