hurmetcrab3's list "Girls part 1" of 4 great name ideas: Carsyn - Finn!

Girls part 1

A contemporary, feminized variation of Carson.

Carsyn

Clarke

This 1950s Welsh bird name sounds less dated than our fifties Robin. 

Deryn

The most enduringly popular hero of Irish myth was Finn McCool, whose name is one of the coolest ever. When used for the female protagonist of <em>How to Make an American Quilt</em>, Finn established its hipness for girls as well. 
</br></br.
But cool as it may sound, Finn cannot really be considered a gender-neutral name. It was given to nearly 2000 baby boys in the US last year, versus only 15 baby girls. Finley, by contrast, is almost exactly evenly matched.