Cognomen Gules (Gules 
, Geule 
, Geules 
) , around the world, is a rare surname. The cognomen Gules is habitual in Romania, where it is quite a rare surname, Belgium, where it is a rare surname, and Norway, where it is a very rare surname. In absolute terms, it is the most numerous in Romania, Brazil, and Philippines. Much less frequently, Gules is the forename as well as the last name.