- The Duchess of Brabant(2001)
- Prince Emmanuel (2005)
- Princess Eléonore (2008)
- Baroness Maria Christina von Freyberg (Second cousin of his father)
- Count Charles-Henri d'Udekem d'Acoz (maternal uncle)
He began his education in 2005 at Sint-Jan Berchmanscollege (2005-Present).He was named:
- Gabriel: Continues the tradition of El-/-el names in the family
- Baudouin: For his great-uncle, King Baudouin of Belgium.
- Charles: For his maternal uncle and godfather, Count Charles-Henri d'Udekem d'Acoz
- Marie: For the Virgin Mary, as per tradition with Catholic royalty.