I do think so too. Willeme started with reconditioning WW I Liberty trucks in 1921, just like Loheac did with the International Harvester M 426 after WW II. Some were later totally rebuilt and fitted with tyres and Diesels; then, Willeme built his own products, but they still were very similar to the Libertys.
Even this 1950 R 15 TP8 still reminds the Liberty with its curved front axle and unique radiator grille. The endless bonnet hides, of course, a straight-8.