Jean-Charles Chatelin (1884-1948), counted among the "Righteous", but forgotten as a neurologist who studied under Pierre Marie.

Charles Chatelin (1884-1948) studied under Pierre Marie (1853-1940) at hôpital La Salpêtrière and went on to a career profoundly affected by World War I. He wrote a remarkable thesis on the clinical aspects and radiography of hereditary craniofacial dysostosis, which had been recently described by Octave Crouzon (1874-1938). A few days after the publication of Georges Guillain (1876-1961) and Alexandre Barré (1880-1967), Chatelin published a comprehensive study of the eponymous syndrome. His study was prepared before that of Guillain and Barré, but only their names are remembered. After examining patients with spinal injuries, Chatelin and Pierre Marie gave the first description of what would become, in 1924, "Lhermitte's sign." The eponym was first used after this sensory symptom was added by Lhermitte to the clinical picture of multiple sclerosis. In 1915, Chatelin and Pierre Marie used a technique based on radiographic overlays to localize intracranial projectiles. They coupled this with precise examinations of the visual field of wounded soldiers, in order to map out the intra-cerebral visual pathways with accuracy. During World War II, Chatelin and his wife demonstrated their empathy by hiding a Jewish family in their home until Paris was liberated.