I want to find reliable information about Jacques Ledure and Jérôme Ledure. What is available in books, websites etc. is very controversial.
Both of them were active race car drivers in the 1920s and 30s. According to André Biaumet's Chimay book, they were brothers. But this is not confirmed.
Jacques Ledure was a Belgian aviator who sometimes raced under pseudonym "Elgy". In 1922 he took part in the Belgian Grand Prix in a Auto Métallurgique
and in 1927 he won the cyclecar class in the Grand Prix des Frontières, at Chimay, in a Sénéchal
He also raced in the 24 Heures de Spa-Francorchamps, finishing 2nd in 1927 with André Dills of Belgium in an Excelsior, and 3rd in 1928, with the Italian Goffredo Zehender in a Chrysler.
He died at Chimay in 1948, while acting as a race marshal.
Jérôme Ledure is reported to be French by several sources. He finished 7th in the Belgian Grand Prix in 1930 in a works Imperia. He also raced several times in the Spa-Francorchamps 24-hour race in the early 1930s.
A driver named Ledure made three starts in the 24 Hours of Le Mans, but it is not clear who of them he was: if Jacques or, according to many other sources, Jérôme.
In 1924 "Ledure" shared a Bignan with Henri Matthys; in 1925 a Chenard&Walcker with André Pisart; and in 1928 a Chrysler with Goffredo Zehender (this could be the final prouve he was Jacques).