BOURGOGNE did not became Bergeron. from the Brittanica
Bergeron is a surname of French origin.
The name Bergeron may be derived from the Old German word berg, meaning hill or mountain. It may also be derived from the old French berger, meaning shepherd.
Spelling variations include: Bergetron, Berger, Bergey, Bergez, Bergier, Bergeret, Bergerot, Bergereau, Bergeron, Bergerron, Bergerone, Bergeronne, Bergeronneau, Bergerat, Bergerie, Bergère, Bergière, Bergiron, Bergirone, Bergironne, le Berger, le Bergeron, de Bergeron, Leberger