About Corneille Boonen
on page 254 of Histoire Des Archevêques de Malines par P Claessens
"Jacques Boonen, était le fils unique de Corneille et de Gertrude Van den Heetvelde." i.e. Jacob Boonen (later Bishop of Ghent and Archbishop of Mechelen) was the ONLY son of Corneille and Gertrude. Jacob was born at Anvers on 11 october 1573.
In the same book: the father of Corneille was given the baptismal name of Jacques.
Corneille was poisoned and died on June 7 1579
Is there a mistake? It is possible that his son Nicolas is in fact Jacob and Nicolas is Jacob's son.