Le Soir has two articles by Martine Dubuisson about the Royal Decree of November 12, 2015 and royal titles and surnames.
Quel nom pour les princes qui ne seront plus «de Belgique»?
Antoine Clevers from La Libre wrote about the same topics back in November.
Le Roi limite l'octroi du titre de "prince de Belgique" - La Libre.be
Their stories are based on unnamed sources and have not been authenticated.
The preamble of the Royal Decree mentions that, considering the laws regulating the transmission of family names and the National Register, and the involvement of royal family members in economic life, "it is advisable to as much as possible avoid confusion between the family name and the titles".
12 NOVEMBER 2015. - Koninklijk besluit betreffende de verlening van de titel van Prins of Prinses van België
The explanation given by Mr. Clevers:
- An objective of the Royal Decree was to avoid the confusion between the family name and the title. The royal family's real surname is Saxe-Coburg and not "of Belgium", which comes from a confusion between the title of Prince of Belgium and the name Saxe-Coburg.
- From January 1, 2016, it is legally required to indicate on identity documents both a surname (Saxe-Coburg) and a title (Prince).
- King Philippe seeks to avoid his younger children using their title for special privileges in their future professional lives.
Ms. Dubuisson says that in Belgian nobiliary law, the surname and the title are supposed to be separate, but the distinction was never clear in the royal family. In their birth certificates, it was the title which appeared in the box "name". The surname "of Saxe-Coburg" or "of Belgium" derived from the title Prince of Saxe-Coburg or Prince of Belgium.
Mr. Clevers,
and Place Royale, wrote that the grandchildren of Astrid and Laurent would be Princes(ses) of Saxe-Coburg. However, Ms. Dubuisson only says that the Princes(ses) who are not Princes(ses) of Belgium
could be called "of Saxe-Coburg", since they are descendants of Leopold I. She states that the Palace wants to limit the number of people who wear the name "of Belgium", and the "of Belgiums" are charged with choosing a surname for their children from the "titles to which they are entitled by their ancestry" (article 4 of the Royal Decree).
In fact, Prince and Princess Amedeo used the same surname and title that appeared on the birth certificate of Amedeo in 1986 for their daughter. When Amedeo became Prince of Belgium in 1991, his birth certificate was completed with a "marginal note" that he is also "prince of Belgium", but the surname was not changed. On Princess Anna Astrid's birth certificate, "Her Imperial and Royal Highness Princess Anna Astrid Marie Archduchess of Austria-Este (Habsbourg-Lorraine)" was indicated under the heading "name and forenames".
(What would be interesting to see is how she is addressed by the Palace, since it gives Prince Lorenz and his family
the style of HRH rather than HI&RH, and the Royal Decree granted the style of HRH to the Princes(ses) of Belgium alone.)