In 2007, a New Zealand couple decided to name their newborn son Superman... because their chosen name (4Real) was rejected by the Registrar of Births, Deaths and Marriages. Pat and Sheena Wheaton said they would get around the decision by officially naming their son Superman but referring to him as 4Real. "I'm certainly not a quitter," Pat Wheaton told The New Zealand Herald.
Source
The New Zealand Herald, c. August 12, 2007