Cognomen Севальос-Кальдерон (Севальос-Кальдерон 
) , in the world, is a very rare family name. The last name Севальос-Кальдерон is habitual in Eastern Europe, particularly Russia, where it is a very rare surname. Parts of the name also exists independently as a last name Севальос, and a last name Кальдерон.