His mother, Clara Marx née Pichler (1876–1948), came from Oberdrauburg in Carinthia where her family ran a restaurant, "Gasthof Post".
At the same time he enrolled at the Styrian school of arts with Daniel Pauluzzi, Alfred Wickenburg and Fritz Silberbauer as professors.
It is likely that he also attended the master class for wood and stone sculpting run by Wilhelm Gösser, son of the sculptor Hans Brandstetter and creator of several monuments in the city of Graz.
He interrupted his military service from May 1939 to January 1940 to be able to take the entrance exam for the sculptors' school at the Academy of Fine Arts Vienna.
Maybe he was not duly valued as an artist by his surroundings but rather seen as a craftsman, albeit a very skilled one, who was always willing to help out when asked to repair objects of any material.
Research is going on concerning a heretofore unknown marble sculpture, the so-called "Geiger-Statue" , which has surfaced in January 2016 near downtown Lienz.
[5] Hellmuth Marx created his sculptures mainly from marble, clay, granite, sandstone and plaster.
When the huge lime tree that characterized the view of Oberdrauburg's main square had to be cut down it became the material of numerous carvings and wooden sculptures.
His sculpture "Mutter und Kind" (Mother and Child) has been incorporated in the 21er Haus, museum of contemporary arts of the Belvedere, Vienna.