This incident took place 6 August, 1993, when Marjorie "Marge" Dursley, the sister of Harry Potter's uncle, Vernon Dursley, visited the Dursley family at Privet Drive, in Little Whinging. Marge's insults to the memory of both Harry Potter's parents, James and Lily Potter, got the thirteen-year-old wizard upset and he lost control of his magic, and unintentionally made his aunt magically blow up like a balloon and float about the room. Harry, then, grabbed his trunk and left the house in a fit of rage, heading to the Leaky Cauldron, in wizarding London.