Birth-sword of Carcassonne

At birth, all noble sons in the Dukedom of Carcassonne are made to touch a specially forged blade, and this weapon bangs above their cots until they reach an age when they can wield it. This mirrors the story of the original duke. Lambard, whom  was said to have grasped a sword even before suckling at his mother's bosom.
The sword adds +1 Strength to the bearer. Enemies wounded by the sword must re-roll any successful Armour saves.