Cognomen 方斯 (Fons 
, Fance 
, Fones 
) , all around the world, is quite a common family name. The surname 方斯 is habitual in Spain, where it is quite a rare surname, France, and Argentina. Not in comparison with a country's population, this name is the most popular in the United States, France, and Spain. Also, 方斯 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fons | France, Netherlands, United States, Belgium, Spain |
| Fance | France, Indonesia, United States, United Kingdom, Canada |
| Fones | France, Argentina, United States, Spain, Mexico |
| 方斯 | China |