Yes. In fact, Drew Barrymore is the ONLY female Drew I can think of, in my own life or famous people I’ve heard of.
Yes he is! Congratulations!
It is not a common name here. That is part of the reason I chose it. There are hundreds of cultures in Melbourne. Many kids have traditional names from the parents’ country. So I do not think Darcy will be singled out for having an unusual name.