 His mother, Elisa Marie Joseph Lesur was born in Tourcoing on 24 November 1825 and died in Roubaix in 1878.His grandfather, Jean Baptiste Vienne, was born at Menin around 1786 and died at Ghent, Belgium, on 12 January 1830.His grandmother, Léocadie Potteuw, was born at Gheluwe, Belgium, in 1786 and died in Roubaix on 20 April 1859.