9th May 1865
9th October 1937
Julianus Marie August de Boeck was a Flemish composer, organist and music pedagogue.
From 1880 he studied organ at the Royal Conservatory of Brussels under Alphonse Mailly, whose assistant he became until 1902. In 1889 he met the young Paul Gilson who became a close friend and, despite being the same age, his teacher for orchestration. Gilson encouraged de Boeck's composition work.