It's one of the names of a famous Belgian surrealist artist - René François Ghislain Magritte (French: [ʁəne fʁɑ̃swa ɡilɛ̃ maɡʁit].
― Anonymous User 7/6/2022
3
In the movie Domicile Conjugale (Bed and Board), the 4th installment in Francois Truffaut's Antoine Doinel cycle, Antoine's wife wants to name their first child Ghislain. Antoine pretends to agree, but instead registers the baby under the name he prefers: Alphonse.