Joachim Martin

Joachim Martin
Born(1842-04-18)April 18, 1842
Died1897 (aged 54–55)
Les Crottes, Hautes-Alpes, French Republic
OccupationCarpenter
Known forHiding a diary under the floorboards of Château de Picomtal

Joachim Martin (April 18, 1842 – 1897) was a carpenter from the village of Les Crottes, in the French Alps, who left a secret diary underneath the floorboards of the Château de Picomtal.