I love that song. Love. Love. Love. And Cecilia was one of my favorite names, same goes for Luther. I already used those names for puppies, although, Cecilia at least, was subsequently renamed. Why'd I have to give puppies such cool names? How out is it if you had a pet named something? I worked with a guy named Thor, and he said that his parents had a dog named Thor before he was born.
The "S" or soft "C" sound in names can be tricky with the last name. So I don't think Essie/Esther would work, I had already tried the combo.
Also, Ilovechotchkes, I also really like the name Ruth. Unfortunately that has also been veto'd by DP. Your names are beautiful.
Moremadder, Adeline is a great name.
And Eluethia, if you called her Evie or Vivi (I love Vivi) then I'm sure that is just what she would go by. I've known plenty of Elizabeth's that were either Beth, or Liz, or even Elizabeth, that is what they were called by their parents, and what they preferred to be called.
Ninetales, I love your girl names.