Family name Silã (Silã) , all over the world, is an extremely rare last name.
Es, Vieira, Machado, Simadon, Almeida, Barbosa, Batista, Baietto, Boschung, Pereira, Trichez, Mantilla, Silveira, Carvalho, Franklin, Ferreira, Guisse, Soares, Santos, Faria, Ia, Melo, Rosa, Reis, Lima, Ller, Matos, Oliveira, Silva, Souza, Alves, Costa, Ceppo, Braga, Porto, Gomes, Sousa, and Rodrigues