Translations for heedless in French

Here are paragraphs from public domain books translated:

The Saint-Martins went away in an automobile. Jean Daspry—that delightful, heedless Daspry who, six months later, was killed in such a tragic manner on the frontier of Morocco—Jean Daspry and I returned on foot through the dark, warm night. When we arrived in front of the little house in which I had lived for a year at Neuilly, on the boulevard Maillot, he said to me:	Les Saint-Martin s’en allèrent en automobile. Jean Daspry, — ce charmant et insouciant Daspry qui devait, six mois après, se faire tuer de façon si tragique sur la frontière du Maroc, — Jean Daspry et moi nous revînmes à pied par la nuit obscure et chaude. Quand nous fûmes arrivés devant le petit hôtel que j’habitais depuis un an à Neuilly, sur le boulevard Maillot, il me dit :
The Extraordinary Adventures of Arsene Lupin, Gentleman Burglar, by Maurice Leblanc	Arsène Lupin gentleman-cambrioleur, de Maurice Leblanc