All over the world, Trethewey (Trethewey 
) is an extremely rare unknown gender given name. Much more prevalently, Trethewey is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Trethewey | Canada, Australia, United States, United Kingdom, South Africa |
| peterson trethewey Ph.D. University of California, Santa Barbara 2008 |
|