The Prince Couple's son was born on 19 April 2016, and HM The King has decided to confer the title HRH Prince Alexander, Duke of Södermanland on him. This title is accompanied by a coat of arms and a monogram.
The monogram consists of the initial A crowned with a prince's crown.
Since the Middle Ages, kings and princes have had coats of arms in sculpted or painted form, with symbols of the nation and the dynasty. Sweden's National Coat of Arms has largely had the same basic structure since the time of Karl Knutsson Bonde in the mid-15th century, and includes the lion of the House of Folkung against blue streams, combined with the three open crowns that symbolise Sweden.
The Swedish ice hockey team is known as the Three Crowns in reference to these crowns. Since at least the 16th century, there has been an inescutcheon at the centre of the coat of arms featuring the arms of the reigning dynasty. The symbol of the Vasa dynasty was a sheaf of corn. The Bernadotte dynasty is represented by symbols including a curved bridge, since when King Karl XIV Johan was named successor to the Swedish throne in 1810 he was prince of the Italian principality of Ponte Corvo, which means the curved bridge.
It is also an old tradition that dukes of the Royal Family bear the coats of arms of both their dynasty and their duchy. One of the fields of the national coat of arms is then removed and replaced with the relevant province shield. When female succession to the throne was introduced, this tradition was transferred to princesses in the line of succession.
Members of the Royal Family traditionally also have a monogram. These monograms have a more contemporary appearance. Monograms have varying functions. They can be used as a sign of ownership on a piece of furniture or a book, or to give a programme an official character. The monogram can also be used as a symbol of service, for example when a lady-in-waiting wears The Queen's crowned face-to-face monogram in official contexts.