https://en.wikipedia.org/wiki/Konrad_Kujau
"Konrad Paul Kujau (27 June 1938 – 12 September 2000) was an illustrator and forger. He became famous in 1983 as the creator of the so-called Hitler Diaries, for which he received DM 2.5 million from a person who in turn sold it for DM 9.3 million to the magazine Stern. The forgery resulted in a four-and-half year prison sentence."
Hitler diaries
"It is unclear when Kujau produced his first Hitler diary. Stiefel says Kujau gave him a diary on loan in 1975. Schulze puts the date in 1976, while Kujau says he began in 1978. He used one of a pile of notebooks he had bought cheaply in East Berlin, and put the letters AH in gold on the front, although these letters were purchased in a department store, made of plastic in Hong Kong, and he used FH, rather than AH. To add a further look of authentication, he took the black ribbon from a real SS document, and attached it to the cover using a German army wax seal. For the ink he purchased two bottles of Pelikan ink, one black and one blue, and mixed the two together with water so it flowed more easily from the cheap modern pen he used. Kujau had spent a month practicing to write in the old German gothic script in which Hitler used to write. Kujau showed it to Stiefel who was impressed by the work, and wanted to buy it, but when the forger refused to sell it, he asked to borrow it instead, which was agreed upon.[19][20]
In 1978 Kujau sold his first "Hitler Diary" to a collector. In 1980 he was contacted by the journalist Gerd Heidemann who had learned of the diary. Kujau told Heidemann that the diaries were in the possession of his brother, who was a general in the East German Army. Heidemann made a deal with Kujau for "the rest" of the diaries.[21] Over the next two years Kujau faked a further 61 volumes and sold them to Heidemann for DM 2.5 million. Heidemann in turn received DM 9 million from his employers at Stern.[21]
However, on their publication in 1983 the diaries were soon proved to be fakes and Heidemann and Kujau were arrested.[21] In August 1984 Kujau was sentenced to four and a half years for forgery and Lieblang to one year as an accomplice. Heidemann was convicted of fraud and also received a four-and-half year prison sentence the following year.[22]
On his release from prison after three years Kujau became something of a minor celebrity appearing on TV as a "forgery expert", and set up a business selling "genuine Kujau fakes" in the style of various major artists.[23] He stood for election as Mayor of Stuttgart in 1996, receiving 901 votes.[24] Kujau died of cancer in 2000.
In 2006 someone claiming to be his grandniece Petra Kujau was charged with selling "fake forgeries", cheap Asian-made copies of famous paintings with forged signatures of Konrad Kujau.[25]
He was portrayed in the 1991 miniseries Selling Hitler by Liverpool-born actor Alexei Sayle. The series also featured Jonathan Pryce as Gerd Heidemann, and Tom Baker as Stern executive Manfred Fischer.[26] He was also portrayed in the German film "Schtonk!" (1991) by Uwe Ochsenknecht."