Patrick Garfield
From Tardis Wiki, the free Doctor Who reference
Patrick Garfield came from Maidenhead, Berkshire.
Sometime between 1953 and 1972 he lost some of his memory, but he could remember that he had met three men with dark suits and glasses. He drew the men, which were the Men in Black. After these events he couldn't remember some important information about his finance job and was fired.
The Men in Black kept a newspaper article about Patrick Garfield and these events. (TV: The Vault of Secrets)