In all the world, 贞藩 (贞藩 
) is a very rare boy's forename. The given name 贞藩 is habitual in Eastern Asia, particularly China, where it is an extremely rare masculine name. Much less frequently, 贞藩 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 贞藩 | China |