Cognomen 涅尔瓦 (Nerva 
, 涅尔瓦 
) , all over the world, is quite a rare surname. The family name 涅尔瓦 is habitual in Haiti, where it is a rare surname, Estonia, and Venezuela. In absolute terms, it is commonest in Venezuela, Philippines, and Brazil. Likewise, 涅尔瓦 is the forename as well as the last name.