Ashley isn't originally a boys' name - it's a unisex name drawn from an Old English surname. Except for in 1900-1909 (584th) and in 1940-1959 (884th-810th)
Ashley has been vastly more popular for girls than for boys. :-)
see:
http://www.behindthename.com/php/search.php?terms=ashley&popterm=&gender=both&extra=p
Anyway . . . I don't like
Ashley at all but I hate it less on a boy than I do on a girl.