I thank Raphael Marsonet for drawing my attention to the work of Fernande Decruck, via his review of the recent release by Claves. The audio samples intrigue me with their resemblance to the later symphonise of Vaughan Williams. Regarding the complaint that the liner notes gave almost no information about the composer, I would like to point out that there is a website dedicated to the composer, which includes a list of 285 items on its Compositions page.
https://fernandedecruck.com/