Last name Ercilia (Ercilia 
) , globally, is quite a rare family name. The cognomen Ercilia is characteristic of Latin America and the Caribbean, particularly Honduras, where it is quite a common surname, Nicaragua, where it is quite a rare surname, and Argentina. Not in comparison with a country's population, it is commonest in Latin America and the Caribbean, particularly Mexico, Honduras, and Argentina. More frequently, Ercilia is the forename as well as the last name.
Cruz, Martins, Machado, Moreira, Miranda, Santana, Almeida, Andrade, Cardoso, Barbosa, Pereira, Ribeiro, Freitas, Martinez, Carvalho, Gonzalez, Ferreira, Oliveira, Conceicao, Rodriguez, Rodrigues, Goncalves, Vieira, Garcia, Campos, Castro, Rosa, Reis, Diaz, Dias, Lima, Silva, Sousa, Souza, Alves, Costa, Fernandes, Paula, Ramos, Rocha, Gomez, Gomes, Lopez, Lopes, Jesus, Santos, Soares, Araujo, Perez, and Nascimento