Those marked with an asterisk are attested in history.
Galen St. Clair — a gentleman, and Prince of the Onyx Court
Charles St. Clair — a gentleman of good name and poor fortune; Galen’s father
Cynthia St. Clair — a young lady in need of a dowry; Galen’s sister
Philadelphia Northwood — a young lady of great wealth
Jonathan Hurst}
Laurence Byrd} — friends to Galen St. Clair
Peter Mayhew}
Dr. Rufus Andrews — a physician and scholar; Fellow of the Royal Society
*George Parker, Earl of Macclesfield — President of the Royal Society, and architect of the new calendar
*Henry Cavendish — a brilliant young scholar; son of Lord Charles Cavendish
*James Bradley — Astronomer Royal to King George II
*Charles Messier — a French astronomer
*John Flamsteed — the first Astronomer Royal, now deceased
*Edmond Halley — a cometary astronomer and Fellow of the Royal Society, now deceased
*Sir Isaac Newton — former President of the Royal Society, now deceased
*Dr. Samuel Johnson — a learned gentleman of very strong opinions
*Elizabeth Vesey}
*Elizabeth Montagu} — ladies of the Bluestocking Circle
*Elizabeth Carter}
Edward Thorne — valet to Galen St. Clair
*Kitty Fisher — a courtesan
Sir Michael Deven}
Dr. John Ellin} — former Princes of the Stone, now deceased
Lord Joseph Winslow}
Dr. Hamilton Birch}
Lune — Queen of the Onyx Court
Valentin Aspell — Lord Keeper
Amadea Shirrell — Lady Chamberlain
Sir Peregrin Thorne — Captain of the Onyx Guard
Sir Cerenel — Lieutenant of the Onyx Guard
Dame Segraine — a lady knight of the Onyx Guard
Dame Irrith — a sprite, and lady knight of the Vale of the White Horse
Carline — an elf-lady, now fallen from grace
Rosamund Goodemeade — a helpful brownie
Gertrude Goodemeade — likewise a helpful brownie, and Rosamund’s sister
Savennis — a courtier of scholarly inclinations
Wrain — a sprite, likewise scholarly
Magrat — a church grim
Hafdean — keeper of the Crow’s Head
Angrisla — a nightmare
Podder — a hob, and servant to the Princes of the Stone
Blacktooth Meg — hag of the River Fleet
Ktistes — a centaur, grandson of Kheiron
Wilhas von das Ticken — a good-tempered dwarf
Niklas von das Ticken — an ill-tempered dwarf; Wilhas’ brother
Lady Feidelm — an Irish sidhe, and former seer
Abd ar-Rashid — a genie of Istanbul
Il Veloce — a faun long resident in the Onyx Hall
Wayland Smith — King of the Vale of the White Horse in Berkshire
Invidiana — former Queen of the Onyx Court, now deceased