Sville
Gattefossé, Jean
Jean Gattefossé (1899-1960) was an advocate of a North African Atlantis and wrote two books[311][312] on the subject. Earlier Gattefossé, together with Claudius Roux, published an extensive bibliography in a volume[313], which contains a list of 1,700 books and articles relating to Atlantis.
In 1939, Gattefossé published a novel, Les Portes de Bronze [1804] (The Bronze Doors), which purported to be based on the research notes of a then recently deceased ‘Jean de Sauveclare’, who had purportedly searched for Atlantis in 1921. Although de Sauveclare is noted on the cover as a co-author, I can find no record of any such real person – perhaps it was just a marketing ploy?
According to Atlantisforschung.de(a) Gattefossé wrote to Egerton Sykes in 1959, declaring his belief that the Pillars of Heracles were situated in Tartessos, now known as Seville, “where they are a tourist attraction.” The same link has interesting additional information about Jean and his brother René-Maurice.
(a) https://atlantisforschung.de/index.php?title=Jean_und_Ren%C3%A9-Maurice_Gattefoss%C3%A9 (German)

