Alphonse Pirson

It is little known about the Belgian composer Alphonse Pirson. I had never heard of him before when I stumbled across a small published score of his "Evocante caresse, for cello or violin and orchestra". I bought the score and tried to find more about him. He is not listed in the common encyclopedias, and from the sheet music I could just find information that it was printed in "Bressoux-Liege". So I contacted the Music Conservatory of Liege and they at least could tell me Alphonse Pirson was a student there in the 1920s and that he was born in 1893.