December 7, 1545 – Birth of Henry Stuart, Lord Darnley, son of Matthew Stuart, 4th Earl of Lennox and Margaret Douglas (daughter of Margaret Tudor), at Temple Newsham in Yorkshire, England
Lord Darnley was the second husband of Mary, Queen of Scots and the father of King James VI of Scotland/James I of England.
Unofficial Royalty: Henry Stuart, Lord Darnley, King Consort of Scotland
December 7, 1724 – Birth of Princess Louise of Great Britain, daughter of King George II of Great Britain, at Leicester House in London, England
Unofficial Royalty: Louise of Great Britain, Queen of Denmark
December 7, 1803 – Birth of Maria Josepha of Saxony, third wife of King Ferdinand VII of Spain, in Dresden (Germany)
Unofficial Royalty: Maria Josepha of Saxony, Queen of Spain
December 7, 1807 – Birth of Feodora of Leiningen, Princess of Hohenlohe-Langenburg in Amorbach, Bavaria (Germany)
Feodora was the maternal half-sister of Queen Victoria.
Wikipedia: Feodora of Leiningen, Princess of Hohenlohe-Langenburg
December 7, 2003 – Birth of Catharina-Amalia, Princess of Orange, daughter of King Willem-Alexander of the Netherlands, at Bronovo Hospital in The Hague, The Netherlands
Full name: Catharina-Amalia Beatrix Carmen Victoria
Unofficial Royalty: Catharina-Amalia, Princess of Orange