Gender confusion prevented a German boy being Matti, because the sex of the baby wouldn’t be obvious. And you won’t find any Germans named Merkel, Schroeder or Kohl, either, because surnames are banned as first names.
The name 4Real fell foul of authorities in New Zealand, because names cannot start with a number.
A judge there also made a young girl a ward of court so that she could change the name she hated – Talula Does The Hula From Hawaii.
When Japanese parents register their newborns, the local authorities can say no if they don’t think the name is appropriate. In 1993, the name Akuma, meaning “devil”, was not permitted.