According to The New Penguin Dictionary of Music, Busnois is the name by which Antoine de Busne was known. He was a Flemish (Netherlandish) composer in service to the dukes of Burgundy. Wrote masses and other church music, also secular chansons.
Antoine Busnoys: Method, Meaning and Context in Late Medieval Music
Paula Marie Higgins
Die Chansons von Antoine Busnois: die Ästhetik der höfischen Chansons