I think Millie could work as a nickname for Matilda, too!
Josephine Joie, Sephie, Joss,
Miranda- Minnie, Mindy,Miri
Seraphina- Seri, Sephie, Sina, Sia
Clementine- Lemmy,Clea,Cline, Mint,Tine,
Domenica- Minca,Demi, Deni
These may not make sense to anyone but me. I have some good friends with less common nicknames and I know their lovely/clever names have influenced my thinking.
Aurora nn Arrow
Penelope nn Peony
Lorelei nn Rilla
Tons more I will add when I am on the laptop tomorrow!
Lorelei - Lola :)
Beatrice - Bay
Elizabeth - Thea
Lydia- Lady (had a friend who called her daughter, named lydia, little lady)
Francesca - Fancy
Susanna - Zuzu
I wrote a story in high school witch a character who went by Essie and her full name was Celeste. I think that's really unexpected and awesome. :)
I have a friend whose name is Angelina, and people call her Gina. But that's not very unexpected.
My dog's name was Zoe. My mom called her Suzie or Suzie Q. But then again, my mom calls most female dogs Suzie/Suzie Q.
...Speaking of Suzie Q... that'd be a cute nickname for Susan Quinn or something...
Oh, and speaking of Susan, an unexpected nickname could be Sukie?
I am infatuated with the name Marigold, and I would use Maggie as a nickname. I like Coco a a nn for Cordelia and Roscoe (I think it's a unisex short form) and Louie and Nell for Eloise.
I used to know a couple with a little girl called Josephine who everyone called Bijou. I'm not sure how they figured that one, but it is a really cute nickname.