Anthelme Mangin (19 March 1891 – 10 September 1942), real name Octave Félicien Monjoin, was an amnesiac French veteran of the First World War who was the subject of a long judicial process involving dozens of families who claimed him as their missing relative.
On 1 February 1918, a French soldier was repatriated from Germany and arrived at the Gare des Brotteaux in Lyon, suffering from amnesia and lacking military or civil identification documents.
In January 1920 Le Petit Parisien published a front-page feature with photos of several asylum patients, including Mangin, in the hope that their families would recognize them.
[1] Starting at the railway station, Mangin walked unaccompanied to the Monjoin family home, though he did not acknowledge the old man.
In 2004 Mangin was the subject of a TV documentary by Joël Calmettes titled Le Soldat inconnu vivant ("The Living Unknown Soldier").