Okay this is what I've managed to come up with:
Maria Fredericksson Silfverschiold - nice hairstyle but it obscures her hair-piece; I didn't even realize she was wearing one until you pointed it out. Anyway its nice, matches her pearls.
Yes, I didn't realize it at first either, but most of the shots of her had her facing to her right which obscured the view. Thanks for getting such close and clear shots.
Can you identify this lady (I'm assuming she's one of the cousins as well):
Photo - interesting tiara
This is Countess Bettina Bernadotte, daughter of the Lennart and Sonja Bernadotte and currently head of the branch that lives on and operates Mainau. The tiara was worn previously by Lennart's first wife Karin in the 1960s (?). It is the only time I have seen it other than this.
who's the young woman in the blue dress behind her, I think I might be able to come up with a picture of her as well. She seems to be wearing a very small bracelet? in her hair.
This is Countess Sandra Bernadotte, wife of Bettina's younger brother, Bjorn. They married in 2009. For her wedding she wore the "cuff-link" tiara usually seen on the Mainau women, but changed it for this bracelet (?) for her wedding reception. Although it is rather insubstantial, I think she look good in it and the blue gown is very nice on her.
I have the same picture, plus a rather blurry view of the back of the hair but she doesn't seem to be wearing any jewels in her hair.
I didn't think she had any adornment on her hair...but with that choker and rather ample cleavage, she really didn't need anything else. The style of her gown was...meh...but I really liked the color.
unfortunately I couldn't find anything on these ladies.
Actually, Kristina de Geer was the only one that I thought I may have seen something glittering on the back of her head (maybe during the cake-cutting footage) but it was from far away and hard to tell. Not crazy about her gown either.
I do plan to post pictures of several other ladies wearing tiaras, most of them I don't recognize. They're probably members of the extended SRF.