For example, in mine are:
-Kateřina, Jan, Petr, etc..
Most Helpful Guy
I made a small research about it, last year, these were the most common names, I'll list the top 10:
Male Names: Miguel, Davi, Arthur, Pedro, Gabriel, Bernardo, Lucas, Matheus (this is my name too :D), Rafael, Heitor.
Felame Names: Sophia, Alice, Júlia, Isabela, Manuela, Laura, Luíza, Valentina, Giovana, Maria Eduarda.
If you wanna check the full list, it's here: exame.abril.com.br/.../os-100-nomes-mais-comuns-no-brasil-em-2014
I live in Brazil by the way.1