A nice tribute to the late Grand duke Jean!
When looking at the pictures and the guest lists, there is a large showing up of royalty (both from reigning houses as former reigning) and nobility. Off course many of them are related in one way or another.
The following are prince Carlos of Bourbon-Parma, Duke of Parma and his wife Annemarie:
Present as Jean was also a prince of Bourbon-Parma, through his father prince Félix of Bourbon-Parma. The father of Carlos, deceased prince Carlos-Hugo, was a 1st cousin of Jean.