Cognomen Vonce (Vonce 
, Schwanz 
) , around the globe, is quite a rare family name. The cognomen Vonce is characteristic of Germany, where it is quite a rare surname, Brazil, where it is a rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Vonce | Singapore, United States, Venezuela |
| Schwanz | Canada, Brazil, United States, United Kingdom, Germany |