Jemma

Jemma is the queen of the Jewel Kingdom. She is married to King Regal and is the mother of Demetra, Sabrina, Roxanne, and Emily. In the 2020 reprint, her name is spelled Gemma and she is their aunt.

Biography
In the Dark Times, before Regal and Jemma became the king and queen of the Jewel Kingdom, the land was ruled by the evil Lord Bleak. Somehow, they managed to take possession of the Great Jewelled Crown, of which it is said that whomever possesses the Crown will rule the land. They successfully banished Lord Bleak and his Darkling followers across the Black Sea and subsequently were crowned the new king and queen of the Jewel Kingdom.

Eventually, Regal and Jemma decided to divide their kingdom and give each of their four daughters her own jewel and her own land to govern.

Trivia

 * The dedication in all versions of The Sapphire Princess Meets a Monster refers to a "Princess Gemma." As Jemma was renamed to Gemma in the 2020 reprint, it is possible that she was named after this person.