I love this name! I have never heard of it used for a name before until I met a girl with it once and have adored it since. What a sweet and gentle name for a girl.
Like Dawn, this name can sound really awful in certain people's pronunciation. I don't really like the sound much even in its proper pronunciation, ha ha. Someone a bit ditzy comes to mind.
This name is alright, but not something I would suggest actually using.
However, it is fairly cool because this name is not only a name, but also its own pronunciation and meaning - that is to say, the name is "Fawn," pronounced "FAWN," meaning "Fawn." That amuses me to no end.