The Dark is Rising Wiki
Norman Withers

Gender: Male
Place of Origin: England
Affiliation: Dark
Appears in Over Sea, Under Stone

Norman Withers is the brother of Polly Withers and the owner of the yacht The Lady Mary. He and his sister are neighbors of the Drew family back in London, living in Marylebone High Street, which is round the corner from the Drews. Norman Withers is an antique dealer.