So many Rainys...
I've needless to say, heard of some absolute crackers. Some of my favourites include:
Deathknight
Bob 1 and Bob 2 - two different drivers at the same company were assigned these names by the management.
Mary, Marry and Marrry - all employees at the same hotel; each Mary was distinguished by the amount of r's that she spelt her English name with.
Nikolaeovich - Apparently this young gentleman was a big fan of a composer with the same name.
Bale - This surname doesn't quite work as a given name, does it?
Dodo - I hope that this was based upon a Chinese nickname or something.