Across the world, Вонтроба (Вонтроба , Wątroba ) is an extremely rare unknown gender forename. Predominantly, Вонтроба is the last name as well as the forename.
Vontroba, and Wontroba
Осип, Іван, Марія, and Ярослава
, Wątroba 
) is an extremely rare unknown gender forename. Predominantly, Вонтроба is the last name as well as the forename.