DD #1's three names:
1. One "everyone" has heard and "no one" has used ( a p h r o d i t e ).
2. One "everyone" has heard and "everyone" has used ( m a r i a n ).
3. One "no one" has heard and "no one" has used ( i l l y r i a ).
(Words in quotes used loosely as if to say "relatively speaking" from this American's perspective.)
I'd do the exact same thing in the exact same order for DD #2.
Names "everyone" has heard and "no one" has used:
Alcyone, Amoret, Atalanta, Callisto, Circe, Clemency, Hespera, Honey, Isis, Loveday, Mist, Ophelia, Pandora, Saga, Tempest, Terpsichore, Titania
Names "everyone" has heard and "everyone" has used:
Astrid, Aurora, Cassandra, Daphne, Elenna, Eva, Freyja, Giselle, Elaine/Helena/Heleyne, Ingrid, Kara, Lilje, Lorelei, Morgana, Natasha, Sol, Sonja,
Names "no one" has heard and "no one" has used:
Aglaia, Alatáriel, Ancalimë, Astraea, Blodeuwedd, Celebrían, Cissea, Eilonwy, Eimyrja, Eir/Eira, Eisa, Elbereth/Elentári, Eos, Éowyn, Gersemi, Gwenllian, Hecate, Huldra, Idunn/Idonea/Idony, Ilmarë, Imladris, Ino, Írimë, Iving, Lyonesse, Lysistrata, Melusine, Nimue/Niniane/Nyneve, Oenone, Olwen, Ondine, Ourania, Pareerou, Polyhymnia, Rivendell, Silmariën, Skathi, Tinúviel, Undómiel, Verdande, Villanelle, Yavanna, Yvaine
I like Stella, Ophelia, Elenna, Eva and Aurora the most. Cissea is really cool, but I've never heard of it. Some ideas...
Callisto Aurora - followed by something unique such as Eowen. Callisto Aurora Eowyn is very pretty!
Callisto Stella Hecate - similar idea as Callisto Aurora
Callisto Ophelia - don't like as much due to the double O.
Callisto Elenna - this doesn't flow well, you would need to put something between the two names, like Sol. Callisto Sol Elenna
Hespera Tinuviel Aurora - very nice
Isis Aurora - Aurora seems to work wonderfully with everything!
Morgana Stella Hecate
Pandora Cissea Idony
Tinúviel Stella Eowyn
p.s. totally agree with above poster about how to pick which names to use.
I'm going to print off your list of names and try to work out some combos at break/dinner etc. so I will be back!