a) being approved by the Head of the House;
b) being celebrated under a catholic cerimony.
C-P is divorced and would marry just in a civil cerimony.
OTOH he did not ask for the CoP approval.
Therefore the CoP declared that C-P would no longer be a HRH, just Prince Charles-Philippe d'Orléans, and, should he wish to, remain Duke of Anjou.
His new wife would not be HRH, Princesse or Duchess, but plain Mrs Naomi Valeska d'Orléans.
Any children the couple might have (doubtful) would not be HRH, Princes or Princesses or members of the FRF nor have succession rights.
C-P's first wife, Diana de Cadaval, could retain the title of HRH Duchess of Anjou.
C-P immediately refuted Jean's statement.
He declared that he lives in a republic and, therefore, he does not need to ask anybody's approval.
He was born HRH and nobody can take that style away from him.
Interesting that, when it suits him, he rallies to the republican values, but he also wants the benefits of being a member of a RF from a country that doesn't count or care much for their own RF.
Finally in a clear act of defiance, he declares that his new bride will take all his styles and titles and will be HRH la Princesse Naomi Valeska d'Orléans, Duchesse d'Anjou.
https://www.lepoint.fr/people/grabuge-chez-les-orleans-le-comte-de-paris-defie-par-son-cousin-le-duc-d-anjou-25-09-2023-2536777_2116.php#xtor=CS3-190
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