Amos and Nelly Grubbs are an elderly couple who reside within the Mansion of E. They live right next to Frederick and are thus also known as The Neighbors
Amos is the semi-retired Librarian to the Mansion. He is a close friend to Frederick, whom he has a History with.
Before becoming Librarian, Amos was a wizard. He given up magic after Frederick's accident. To his questionable luck, this allowed him to survive The Crash.
Nelly is the Mansion's semi-retired Gardener and Task Mistress. With Rosemary's arrival, she has has become fully retired of the latter.