(One of the first things Daenerys had done after the fall of Astapor was abolished the custom of giving the Unsullied new slave names ... they were free free to return to their birth names or called themselves after heroes or ... Grey Worm, the leader overwhelmingly chosen by the Unsullied themselves, had remained Grey Worm.) When she, Daenerys, asked him why, "It is a lucky name. The name this one was born to was accursed. That was the name he had when he was taken for a slave. But Grey Worm is the name this one drew the day Daenerys Stormborn set him free.