DS(7) is the short version - not Ashley. We have never had the smoking connection mentioned. I am a little unsure how the tree thing will pan out but I doubt he will let it affect him - he likes his name and loved the ash cloud news headlines when the Icelandic volcano was in full swing
I think that all names that end in ley have "gone to the boys" in America. Or will do. Those American baby name wizards said so. Even Stanley! they think it is cool for girls, just whatever you do don't give it to a boy!
So if you are going to use it I wouldn't give it to a boy. I prefer Aislinn.
In the UK I thought the convention was that Ashley was a boy and Ashleigh was a girl
In the US Ashley, Ashlee, Ashlie, Ashly, Ashleigh, Ashlea etc all seem to be for a girl. Not sure if they use it for boys at all.
I've only ever known one Ashley (a boy) who was a couple of years younger than me. He was (in my 7 year old eyes) they naughtiest boy who'd ever lived and the poor kid got blamed for everything on our street. It was always "ummmmm, Naughty Ashley must have did it". Sad!