Sister for Aurelia would be called...?

[Magtils]

I'm due in June, not finding out what we are having and have a boys name sorted, but can't agree on a girls name. I like fairly traditional, strong, longer names that have a nice nickname whereas my husband prefers something a bit more unusual... Any help would be appreciated!

Thank you for all your suggestions. Some fab ones here that we hadn't thought of.

Cassiopeia

Cecily

Vivienne (Viv/Vivi)
Julienne
Juliette
Julietta (Etta, Julie, Ju-Ju)

Aveline
Adelaide
Katherine
Olivia
Persephone
Cornelia (nicer and more 'organic' than Cordelia, IMO)
Jasmine
Felicity
Imogen
Victoria
If you like Hermione but want to get past the Harry Potter thing, Hermyon (pronounced her-mee-on) is a similar alternative

The Aurelia we know has a sister called Dulcie.

Evangeline, Cordelia, Grace or Ariadne :)

Rowena

Aurelia is beautiful!

Antigone
Astrid
Iris
Persephone
Hermia
Juliet

Ophelia

Amity

Elodie.

Violet
Mathilde
Seraphine
Eloise
Clara
Ines

Beatrice.

Don't think I've ever actually thought that name was great before, but Aurelia and Beatrice seem right together. Rory and Bea (I like it pronounced Baya).

Aurora?

The Aurelia I know has a sister called Aprillia- I have only ever heard it not seen it written down, so I'd check the spelling!

Floriana (Florrie/Flo)
Hilaria
Iulia (Julia)
Livia
Marcella
Portia
Carmine (Cara)
Clotilte (Tilly)
Phoebe
Felicity
Isabelle (Isa, Isabella, Bella,Belle)
Penelope (Penny/poppy)

Lucia

Aprilia is an Italian scooter manufacturer...

Mary?
Tamara?
Florence?
Ophelia (my fav as compliments DD)
Roselyn?

Madeline
Manon
Francesca
Sylvie
Darcy
Emmeline
Minette

Athena

aired'

I had to google that, because I am sorry, I didn't believe you!

I am at a loss as what to say, I thought it would be some sort of goddess I hadn't heard of...

Madeleine

Clementine (pronounced 'teen' at the end)