- "Petunia did not want Lily as a bridesmaid, because she was tired of being overshadowed; Lily was hurt. Vernon refused to speak to James at the reception, but described him, within James’ earshot, as ‘some kind of amateur magician’."
David Copperfield is the stage name of a very successful magician in the Muggle world.
During the wedding of Vernon Dursley and Petunia Evans, Vernon referred to James Potter, a wizard, brother-in-law of Petunia and Lily Evans' boyfriend, as an amateur magician, an intentional and grave insult to any true wizard.
- Pottermore (Mentioned only)