Wikipedia
Praneuf (surname)
Praneuf (Pra-Neuf) is a surname. With a popularity rank of 27,957, it is the rarest last name in France, but is still in use today. Most people with this name live in France, but the names are also found in countries such as Luxembourg, Germany, Belgium, Italy, Switzerland, Spain and others.
The surname denotes one of nine family clans. The clans were founded under the circumstances of protecting each other's interests, and to be united against the Britons (England).
In the 15th Century, Praneuf was one of the nine rare family clans called Les Neufs. Each of the clans has a unique variant.
Almost all of these names start with Pra and end with a number.