Family name Marcial Humberto (Marcial Humberto 
) , around the globe, is a very rare last name. The surname Marcial Humberto is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare surname. More prevalently, Marcial Humberto is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Marcial Humberto | Costa Rica, Chile, Peru, Ecuador |