Thank you everyone.
Its an unfair vote, as I only added Julia, Erin, Seren and Carolyn as options later on.
However these are the results of your votes
(so far):
Caroline - 18
FFion - 7
Seren - 3
Julia - 3
Erin - 3
Carolyn - 1
In terms of popularity these are the positions from 2009 baby names table:
Erin - no. 33 (1705 girls named Erin)
Julia - number 84 (766 girls named Julia)
Seren - number 121 (447 girls named Seren)
FFion - number 210 (243 girls called Ffion)
Caroline - number 664 (55 girls called Caroline)
Carolyn - no. 2759 (8 girls named Carolyn)
Not sure what to read into the above.
I think Caroline and Julia are the most classic names, and have a family connection. Although great granny Caroline was an alcoholic (and spent many years in an asylum), but when I heard the stories I thought she was just misunderstood.
Ffion and Seren are short (DH prefers names that are no more than two syllanbles), and both lovely. Not too girly, and Welsh. I would definitely have Ffion, if we had a Welsh surname, but although DH is Welsh his great Grandfather was English and so we have an English surname.
Erin and Carolyn - I just like, although concerned Erin may be a list harsh sounding to some ears, and seems to be working its way up the popularity charts.
Hmm, erring to Caroline today.