So for those of you who have read previous posts of mine you will know that my absolute top girls name right now is [name]Olympia[/name], with [name]Josephine[/name] and [name]Marguerite[/name] as second and third.
Unfortunately SO puts it in the mn spot, go figure, so I’m stuck. The first name I came up with was [name]Rowan[/name] [name]Olympia[/name], which he likes, but I’m not sure about. Does it just scream “Tree Noun LastName”?
[name]TIA[/name] 
I’m sorry, but while I quite like each name individually, I really dislike this combo. It sounds way too Olympics-themey to me. [name]Rowan[/name] next to [name]Olympia[/name] makes me think of rowing in the Olympics (Rowin’ Olympics). I think of some superwoman athlete, which isn’t necessarily bad, but I just don’t think it works as a name.
I agree with previous poster. [name]Rowan[/name] [name]Olympia[/name] is akward and a little odd. Why not [name]Josephine[/name] [name]Olympia[/name], that is nice.
Ditto. I definitely thought of Olympic rowing!
I love [name]Olympia[/name], though! 
Good luck!