Much too harsh and masculine for a girl, imho. If you do use it, I'd change the spelling to something like Locklynn... although very trendy, people will be able to guess she's a girl.
I also love Afton, Elowen, and Avalon... Afton has always sounded particularly nice in a unisex way...
I don't love the spelling of Locklin--it looks like "locked in" to me. I knew a little girl named Lachlan and thought it fit her well. If you love it, then use it! My suggestion on this name would be to spell it traditionally to avoid the complications of a differently-spelled name.
I also LOVE Elowen for you. I don't think it's too close to Rowan to use, especially if she will be called Ellie. What about Elliott?
What do you think of these?
Chloe or Cleo or Clio
Hollis or Holiday
Sora or Sorrel
Locklyn was on my list. As far as I am concerned, boys names can be girls, and girls names can be boys. Like Locklin.
I love Lochlan/Lachlan for a boy, but my husband thinks it sounds too feminine. I can see why it would seem that way, if you're saying the ending "in" instead of "un". I'm not a fan of changing the traditional spelling, however I do love unisex and even boys names for girls. Spencer is one of my favorites=). I say if you want to use it, use it.
I love Lachlan, boy or girl (if means 'land of lochs', it doesn't have a gender). I really dislike changing the spelling of names when used on girls. Locklin looks so harsh.
Rowen, Colton, and Lachlan make a sophisticated, naturey set. You lose the naturalness of the name when you change it to Locklin.
Lachlan Buchanan is a really good looking actor.. He's hot! I think that Locklin could be super cute for a girl!!!
Too bad about Bronwen, it's a favorite of mine but SO nixed it. Crazy man. My favorites for you by far are Elowen and Avalon.
Rowen, Colton & Elowen sound gorgeous together.
But so do Rowen, Colton and Avalon!
Personally, I'd be done there and spend my time debating those two names. :)
Lindon isn't bad, not really a name I love but love of names is totally subjective so if you love it go for it. I have a harder time getting on board with the other names, I have to admit. I love Auberon, but for a boy. Evolen looks somehow... heavy with the 'o' in there. It's so light and lyrical and floaty, but the 'o' makes it lose the magic imo. Ashlon isn't bad, I just prefer Elowen and Avalon. I don't like Cameron or Ellison on a boy or a girl, and Adalon feels like a lesser version of Avalon.
I like Afton. Or what about Emory?
Well, Lachlan isn't technically a gendered name, historically (it's more of a place name), but I think everyone would agree it's considered a masculine name. Please don't name your daughter Locklin.