||This article is official! This means that it is a part of the published Rainbow Magic series.
| Prince Arthur and Princess Grace
Princess Grace and Prince Arthur are a royal couple living in Fairyland.
Princess Grace wears her long golden hair up in a bun. On her wedding day, she wore the True Love Crown and a long, white, strapless dress. In Frances, she wore her hair in a long ponytail.
Prince Arthur has his fair hair in a quiff and usually wears a suit.
The couple first appear in Kate the Royal Wedding Fairy where they got married.
They then appear in Alexandra the Royal Baby Fairy, where Foster the Stork delivers their baby.
Their next appearance is Georgie the Royal Prince Fairy, where their child's name is announced as George.
In Frances the Royal Family Fairy, they announce the birth of their second child. This marks their final appearance together in a One-Off book.
In Catherine the Fashion Princess Fairy, Princess Grace makes an important speech and needs Catherine's help to look her best.
- Grace is Queen Titania and King Oberon's niece.
- They have two children, Prince George and an unnamed girl.
- They are a parody of Prince William and Kate Middleton, as they are used to reflect the real world events of the Duke and Duchess in the Rainbow Magic series.