Oswald immediately makes me think of
Oswald Bastable from
Edith Nesbit's excellent Victorian children's adventure stories:
http://www.gutenberg.org/files/770/770-h/770-h.htm- his siblings were
Dora, Dicky,
Alice,
Noel and
Horace Octavius. :)
As a modern name, I'm all for it.
Oz is quite a fun nn, and it fits nicely into the current revival trend here.
Oswald PiersOswald KesterOswald Aneurin (an-AIR-in)
Oswald HengistOswald AubreyOswald Morys
Oswald Wystan