It depends what sort of names you like, but here are some suggestions with different styles.
Gloria Lisette
Gloria Josephine
Gloria Stephanie
Gloria Marjolaine
Gloria Catherine
Gloria Eden
I think Gloria goes well with 3-syllable middle names that don't end in A.
**Emma**
http://www.behindthename.com/pnl/54547
Favourites: Eve, Alice, Norah, Isla // George, Charlie, Arthur, Oscar