All around the world, Hilarios (Hilarios 
) is a very rare masculine first name. More prevalently, Hilarios is the last name as well as the forename.
Jose, Rogelio, Jessica, Narcisa, Eugenio, Eulalia, Horacio, Agustina, Bacilio, Cristina, Nicolasa, Norberto, Mitchelle, Alejandra, Victorina, Francisco, Gloria Irma, Jonathan, Alberto, Marisol, Ángel, Joao, Joel, Juan, Maria, Selma, Angel, Karla, Perla, Ruben, Tania, Manuel, Sylvia, Adolfo, Carlos, Lazaro, Esther, Hector, Jacqueline, and Maria Del Carm