Definitely Rowan. I love the tree association.Rohan always sounds like someone messing up Rowan to me (I know it's legit) Roan just makes me think of groan. It also sounds kinda dated cause it rhymes with Joan.So yeah. Rowan all the way.
Yeah, my main issue with Roan is that it rhymes with Joan. But that's just because it's my niece's middle name.I like the tree association with Rowan.Not a fan of Rohan at all so no worries about that!