In all the world, Карвальо (Carvallo , Карвальо ) is an extremely rare unknown gender forename. Much more prevalently, Карвальо is the last name as well as the forename.
Carvalho, Karvalo, and Karvalyo
, Карвальо 
) is an extremely rare unknown gender forename. Much more prevalently, Карвальо is the last name as well as the forename.