For baby girls born in the United States in 2009, Sydney ranked 48th.
Yes it is, owing to its popularity there.
Sydney's name is just Sydney. It's not spelled differently..
Sydney Fairbrother's birth name is Sydney Tapping.
Sydney Sidner's birth name is Kathryn Sydney Sidner.
Robin Sydney's birth name is Robin Sydney Heymsfield.
Sydney Spies's birth name is Sydney Elizabeth Spies.
Sydney Streeter's birth name is Sydney Stanley Streeter.
Sydney Wong's birth name is Sydney Devonne Wong.
Sydney Wolofsky's birth name is Sydney Lynn Wolofsky.
Sydney Wiles's birth name is Sydney George Wiles.
Sydney Ackman's birth name is Sydney Ryan Ackman.
Sydney Ayres's birth name is Daniel Sydney Ayres.