|Capitalize a full title and a title before a personal
name. Otherwise lowercase king, queen, duke,
etc, including a title that is in apposition to a proper name.
For British titles see Lord. Also consult a source such as Burke's Peerage or Debrett's Peerage.
Queen Elizabeth; Elizabeth the Queen; Elizabeth II, Queen of England; the queen
The queen opens Parliament next week.
The former queen lives in quiet retirement.
The present queen is Elizabeth II.
the Queen of Great Britain and Northern Ireland
Juan Carlos, king of Spain; the king of Spain; the king
Carl XVI Gustaf
the kings of France and England
the former shah of Iran, the shah
the Earl of Argyll, the fourth Earl of Argyll, the 12th Earl of Argyll, the earls of Argyll, the earl
Prince Philip; the Duke of Edinburgh; the duke
Prince Charles; Prince of Wales; the prince
the Duke of Norfolk; the duke
the heir apparent
Emperor Augustus; the emperor Augustus