Surname Law refers to legal regulations governing the use and inheritance of family names. These laws can dictate how surnames are passed down through generations, often emphasizing paternal lineage. In many cultures, a child typically inherits the surname of one or both parents, which can reflect family heritage and identity. In some countries, such as Spain and Portugal, there are specific rules about the order and combination of surnames. For instance, children may receive both the father's and mother's surnames, with the father's surname usually listed first. These laws aim to preserve family lineage and cultural traditions.