Last name Siw-Merethe (Siw-Merethe 
) , around the globe, is an extremely rare cognomen. The surname Siw-Merethe is habitual in Northern Europe, particularly Norway, where it is a very rare surname. Likewise, Siw-Merethe is the forename as well as the last name. Parts of the name also exists independently as a first name Siw, and a first name Merethe.
| VARIANT | COUNTRY |
|---|---|
| Siw-Merethe | Norway |