Merra is a Mouse in Ghost of a Tale. She is Tilo's wife, and he searches for her throughout the game. While Merra does not physically appear in-game, artwork depicting her is shown during the credits.
Merra was born in the small village of Hamel, and had several younger brothers. She helped her family by working in the wheat fields, until one harvest season she met Tilo, who had brought his sick master Gerardus Lewlin to the village.
When the time came for Tilo to depart with his master, Lewlin disappeared, leaving him the lute that had been crafted by his own master. Tilo remained in Hamel, marrying Merra three years later and eventually having a son, Brin.