What do you think of Brigida, the Italian form of Bridget? If you search for it on Wikipedia, you'll see that multiple notable women in the 17th and 18th centuries were named Brigida. I find it very sophisticated.
Some combos:
Brigida Cecily
Brigida Lillian
Brigida Beatrice
Brigida Violet
Brigida Alma
Brigida Helen
Brigida Eloisa
Brigida Alice
Brigida Harriet
Brigida Juliet
Brigida Olive
Brigida Florence
Brigida Sibyl
Brigida Blanche
Brigida Opal
Brigida Maud(e)