The British Royal Family comprises the monarch of the United Kingdom and their close relations. There is no strict legal or formal definition in the UK of who is or is not a member of the Royal Family, and different lists will include different people. However, those carrying the style Her or His Majesty (HM), or Her or His Royal Highness (HRH) are normally considered members. By this criterion, the Royal Family will usually include the monarch, the consort of the monarch, the widows of previous monarchs, the children and male-line grandchildren of the monarch and previous monarchs, the children of the eldest son of the Prince of Wales, and the wives or widows of the monarch's and previous monarchs' sons and male-line grandsons.
Different terms may be applied to the same or similar group of relatives of the monarch in his or her role as sovereign of any of the other Commonwealth realms. For example, in Canada, the family is known as the Canadian Royal Family.