Little Savior was the nickname given to an orlan warrior from the Guided Compass tribe who defended Glanfathans and settlers alike during the Broken Stone War. He argued for peace to any who would listen. Few did, and so he reluctantly threw himself into countless battles, stalling aggressors while the defenseless fled.
Since passive benefical effects on weapons stack with everything in Pillars of Eternity, the enchantments "Preservation" and "Herald" stack with all other defense bonuses. For example the Preservation enchantment on this item will stack with the Preservation enchantment on a helmt or an armor etc. The Herald enchantment will stack with other Herald enchantments as well, giving every party member in the area of effect a bonus of +10 to all their defenses.