Gawain Carpenter was one of the members of Captain Anselm's crew aboard the Mermaid's Bliss in 3887. He was brought on board as a shipbuilder and quartermaster. He was killed following a moth attack on the ship.
Gawain was one of two crew members aboard the Mermaid's Bliss whose last name is not given in A Butterfly's Tale, but when speaking of the crew, the two surnames mentioned by Four are Carpenter and Rider. One belongs to Gawain and the other is evidently Anselm's last name.