The blue background of the shield represents the Pacific Ocean off the California coast, while the two golden rays across the shield are symbolic of the sunshine of The Duchess's home state. The three quills represent communication and the power of words. Beneath the shield on the grass sits a collection of golden poppies, California's state flower, and wintersweet, which grows at Kensington Palace.
It is customary for Supporters of the shield to be assigned to Members of the Royal Family, and for wives of Members of the Royal Family to have one of their husband’s Supporters and one relating to themselves. The Supporter relating to The Duchess of Sussex is a songbird with wings elevated as if flying and an open beak, which with the quill represents the power of communication.
A Coronet has also been assigned to The Duchess of Sussex. It is the Coronet laid down by a Royal Warrant of 1917 for the sons and daughters of the Heir Apparent. It is composed of two crosses patée, four fleurs-de-lys and two strawberry leaves.
The arms of a married woman are shown with those of her husband and the technical term is that they are impaled, meaning placed side by side in the same shield.
Mr. Thomas Woodcock, Garter King of Arms said: "The Duchess of Sussex took a great interest in the design. Good heraldic design is nearly always simple and the Arms of The Duchess of Sussex stand well beside the historic beauty of the quartered British Royal Arms. Heraldry as a means of identification has flourished in Europe for almost nine hundred years and is associated with both individual people and great corporate bodies such as Cities, Universities and for instance the Livery Companies in the City of London. "
- Have the Arms been assigned to HRH personally or to her family? (I have asked that question of the College of Arms.)
- I notice that her personal Arms are again very blue. Compare The Duchess of Cornwall and, to a lesser degree, The Duchess of Cambridge and The Countess of Wessex.
- I had envisaged a Swan as a Supporter to represent the Arts, but a Songbird is equally apt. The Feathers are defined as Quills, not just to "...represent communication and the power of words" but I remember reading somewhere that HRH is interested in Calligraphy. If you see her signature, you will understand why.