As he explains in his unpublished biography, in that year Lacaze added the first syllable of his wife's name to his own and henceforth was known as René Sim Lacaze.
Wie Lacaze in seiner unveröffentlichten Biographie erklärt, erweiterte er in diesem Jahr seinen Namen um die erste Silbe des Vornamens seiner Frau: von nun ab nannte er sich René Sim Lacaze.