Here's a photo with their wedguests. The picture had been posted at some other historical forum,sorry I don't remember where exactly.
http://img.photobucket.com/albums/v433/feomarie/PrinceJaque_spouse_wedding_1947.jpg
I have this I.D. list :
Behind the bride and groom we have Prince René and Princess Margrethe of Bourbon-Parma - sitting between the bride's parents Countess Christina and Count Josef Holstein-Ledreborg.
The elegant lady to the extreme right is Cr Pss Märtha of Norway - and next to her it's the groom's younger siblings, Princess Anne and Prince Michel of Bourbon-Parma.
The man standing behind Anne of Bourbon-Parma is wearing the uniform of a Danish chamberlain. Don't know his name, but probably a noble landowner.
Behind him - in a light dress - we see Princess Margaretha of Denmark. Her husband and youngest son, Prince Axel and Prince Flemming, are seen to the right of her.
Behind the bride's mother there is a woman with a big hat...perhaps Princess Luise of Prussia (b. 1917).The uniformed man next to her is Prince Viggo of Denmark.
Behind Prince Viggo it's Princess Aage of Denmark, Prince George of Greece, Princess Ingeborg of Sweden, the priest, and Princess Viggo of Denmark.
Behind Pss Aage: Pss Elisabeth of Luxembourg, Pss M-Adelaïde of Luxembourg, maybe Pss Isabelle of B-Parma (dau of Sixtus), Hereditary Gr Duke Jean of Luxembourg, probably Count Carl Holstein-Ledreborg (brother of the bride), probably Pr André of B-Parma (brother of the groom), Pr Georg of Denmark, and Cr Pr Olav of Norway.
In the white circle: Grand Duchess Olga of Russia (she is singled out because the photo was printed with an article about the grand duchess).
To the right of Olga: Prince Erik of Denmark, and behind him Prince Xavier of Bourbon-Parma.
In the back row, far left: Probably Count Valdemar of Rosenborg and Count Knud Holstein-Ledreborg (brother of the bride).