I like all of your combos individually, but I think
Alfred sticks out.
Rowena is old-fashioned and very feminine, and likewise
Aubrey is old-fashioned (for a boy) and effeminate-sounding (not a bad thing, I
love "sissy" names for boys). But
Alfred, while old-fashioned, is definitely very masculine in sound to me, so it just doesn't fit imo.
Miranda
"Multiple exclamation marks are a sure sign of diseased mind" -- Terry Pratchett