governance of the country.

The specific composition of royal families varies from country to country, as do the titles and royal and noble styles held by members of the family. The composition of the royal family may be regulated by statute enacted by the legislature (e.g., Spain, the Netherlands, and Japan since 1947), the sovereign's prerogative and common law tradition (e.g., the United Kingdom), or a private house law (e.g., Liechtenstein,