I think it sounds more like a females name but you can name your baby whatever you want, i like the spelling Kaelan, and I do know men named Ashton and Stacy.
Only heard of that for a girl but I've heard Kyron, Kyler, Kyrum, Cullin, Caelum and Collin for a boy.
I like the spelling Kaelan though
I know someone with that named. He spells it's Kailin.
I've taught a few kaelan's over years, all boys and lovely boys at that!
I love the name Kaelan for a boy.