It seems that King Simeon was accompanied by his daughter-in-law Pss Miriam and by his grandson, prince Boris. Queen Margarita now has grey hair but she was sitting next to the king.
I also recognised Archduke Maximilian, son of ADss Helene, née Css of Toerring-Jettenbach.
The prince and princess of Prussia seem to be missing.
Which duke of Anjou did you see? The Orleans one or the future duke of Franco?
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I am not quite sure about the tiara, it looks like something from a beauty pageant and does not flatter the bride's face. From a distance it looks more like a net than a tiara.
The dress is simple and nice, even with the coat-of-arms on the train & looks great on her. Both of them seem to be very happy. The church is spectacular and it was thoughtful to leave flowers on the tombs of members of the family.