The unnamed mother of Trellis is a minor character in the Amulet series. She only appears in a memory at the beginning of the eighth volume.
Trellis is seen walking in a blizzard and encounters an old woman, which brings him in a house with his younger self and his mom. He realized that she died, likely from starvation and the cold.
- It is unknown how the mother ended up in the shack in the middle of the blizzard with her son, although it's likely either she was exiled or was escaping with young Trellis.