Sibling Name for Isabella

[MuffinMouse]

We picked Isabella for DD in 2003 just before it boomed into popularity. I'd like to find a girls name that isn't quite so top ten, that goes with it. I think at least three syllables and mn suggestions too please?

Georgina
Elisabeth
Katherine

I think -
nothing that ends in an "lla","nna", or "tta". or an "a" really.
Or an "l" sound.

I like Seraphine, Josephine etc.

I have pondered this for months/years for the obvious reasons!

mary
its fab name underused

marianne
imogen

Roseanna