There's a great thread on Rowan called "Has Rowan Gone to the Girls?" What it pretty much came down to was its about 2/3 male 1/3 female and it's pretty well liked around here.
Rowan was my alternate favorite if we didn't end up using what we chose for LO. I found it very frustrating that people were giving it to girls, but I was prepared to use it for my boy anyway if DH didn't like my first choice. He eventually came around on my choice name so we ended up not using Rowan, but I think its a boy's name, and a cool one. Go for it
It was traditionally a boys name, which is how we got Rowan Attkinson (mr. Bean) it has gained in popularity amongst the girls but I still know plenty that are boys
Re: Rowan for a boy?