He married Ida of Rechtergem, daughter of a wealthy calamine trader in Aachen.
His fortune was immense, he had a residence called Huis van Aken, heritage (1534) of his father in law.
The heirs decided to lower the price : Gaspard gifted 500 Ducats reduction to the Jesuits.
Around 1540, he acquired Engenho dos Erasmos, a sugar cane facility at São Vicente Island in present day Brazil.
His three sons were together one of the most important factors of Antwerp, their wealth was so vast the future generations could benefit from this.