Since the only
Rowan I know of is
Rowan Atkinson, I can't imagine it on a girl. So, for boys.
I'm not good at middle names, but I think a one-syllable name would fit, like
Rowan James or
Rowan John.
Does the sea exist
Because of our longing?
My PNL
http://www.behindthename.com/pnl/3258/61573