Around 1905 he was living in Toulon, listed as composer (Voisin, dit Guy d'Orval) [2].
Successes as a singer, at first in the classical repertoire [3][4], in the 1920s mainly as chansonnier, performing his own songs [5], also on the radio [6], also touring with the Chanson de Paris as singer and piano accompanist [7][8].
Death date unknown. Last traces: a public appearance in 1937 [9]; two songs published in 1942; also in 1942: a named Guy d'Arvor becomes member of the Amicale des auteurs bretons[10].
