Death:Death by Accident 19 December 1945 (Plane crash, aged 30) chart Placidus Equal_H.
French military aviator in World War II, nicknamed "Moses" or "Morlaix" He achieved 21 aerial victories, making him the number three French ace of World War II. He died in a plane crash on 19 December 1945 in Buc, Seine-et-Oise, France. Link to Wikipedia biography (French)
Born: March 21, 1915 in Nantes, France
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Given the birth date provided, Demozay Jean, if still living, would be over 108 years old. Statistically, this is exceptionally rare. It's more likely that Mr. Jean is deceased, although confirming this requires further investigation.
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