Good, the idea of Light female Spriggats remains!
Given that almost 80% of forum users would like to see them, and the number being close to 40 persons, I hope Craig will consider this, as it is certainly one of the more popular ideas around, and has been for the last 2 years!
As for female Spriggat names- they don't have to be philosophers at all, as can be seen from the names of Spriggats in TPA2. They can be writers, warriros, etc.
I'd think of Marie Curie, so a Spriggat by the name of Cruie could do the trick.
Historically, we have Joan of Arc, quite a significant figure in her time. Thus, "Arc" or "D'Ark" would be a good name (and ironic one at that).
How about also famous healers? Florence Nightingale, I think, would be highly appropriate. Thus: Nightingale.