In Studio Ghibli’s The Secret World of Arrietty, the Borrowers’ surname is Clock.
Arrietty belongs to the Clock family, a tiny household living beneath the floorboards of a human home. The family includes Arrietty, her parents Pod and Homily, and their hidden network of rooms assembled from objects borrowed from the larger human world.
The surname comes from Mary Norton’s original Borrowers stories, which inspired the film. The Japanese production uses the character name Arrietty, while the English title commonly adds “The Secret World of” to distinguish it from the source tradition.
Arrietty’s family survives by quietly taking small supplies rather than openly interacting with humans. Their discovery by Sho changes that rule and creates the film’s central tension. The family name is sometimes overlooked because the film is usually identified by Arrietty’s first name.