- Adam is Perdita’s friend in The Queen Elizabeth Story (1950).
- Alcibiades, is a warrior in the Peloponnesian War, including in the dreadful battle of Syracuse, who has a complicated relationship with Athens in The Flowers of Adonis (1969).
- Alexios is a Roman army officer who becomes commander of the motley, savage group known as the Frontier Wolves in Frontier Wolf (1980).
- Amias Hannaford is the boyhood friend of Simon who fights for the Royalists (the Cavaliers) in Simon (1953).
- Anne is the wife of Sir Thomas Fairfax and mother of Moll who has to trail her husband as he leads his army around the country in The Rider of the White Horse (1959)
- Aquila is the young commander of a troop of cavalry who realises that his strongest loyalty is to his native Britain rather than to the legions and a distant empire he has never seen, in The Eagle of the Ninth (1954).
- Aracos is a horse-breeder in A Circlet of Oak Leaves (1968).
- Artos is the bastard son of Uther, who is raised by his uncle as a cavalryman to lead the Roman-British fight against the invading Saxons, in Sword at Sunset (1963).
- Beowulf is the eponymous hero of Beowulf (1961).
- Beric is the infant son of a Roman soldier is shipwrecked; then grows up with a Briton tribe, but is rejected both by them and Rome in Outcast (1955)
- Bess Throckmorton is the lady waiting’—Sir Walter Raleigh’s wife— who had to stay home as he travelled the world’s oceans, in Lady in Waiting (1957).
- Bevis is the young boy who becomes the knight in Knight’s Fee (1960).
- Bjarni Sigurdson is a young sixteen year-old Viking swordsman who is banished from the settlement for five years and becomes a successful mercenary in Sword Song (1997).
- Bjorn, the Bear-Cub, is the foster-son of the old harper, and becomes a harper himself in The Shield Ring (1956).
- Blue Feather is a twelve year old girl who is promised to the cruel chief of her people, Long Axe, in Shifting Sands (1977).
- Boudicca is the defiant queen of the Iceni who leads her small British tribe in rebellion against the Roman invaders in Song for a Dark Queen (1978).
- Carausius is the Emperor served by Justin and Flavius in The Silver Branch (1957).
- Cordella is the girl Quintus wishes to marry in Eagle’s Egg (1981) .
- Cuchulain is the boy in Ireland who claims the weapons of his manhood and becomes the great warrior and hero, The Hound of Ulster (1963).
- Damaris Crocker is a twelve-year-old girl involved with smugglers in Flame-Coloured Taffeta (1986).
- Drem is a boy born with a withered right arm who grows up in a bronze-age settlement on the South Downs in Britain, eventually to become one of the hunters of his tribe, in Warrior Scarlet (1957).
- Felix is a legionary in A Circlet of Oak Leaves (1968).
- Finn is the hero of The High Deeds of Finn MacCool (1967).
- Flavia is Aquila’s sister, kidnapped by Saxon raiders, who marries a Saxon and has a Saxon-child in The Lantern Bearers (1959).
- Flavius is a centurion, friend and colleague of Justin in The Silver Branch (1957).
- Frytha is a young orphaned Saxon girl who seeks refuge in the Secret Valley in the Lake District after her home is burnt by the Normans, and joins Jarl Buthar’s Viking band in The Shield Ring (1956).
- Godmund is the White King in Chess Dream in a Garden (1993).
- Guenhemara is the woman Artos loves in Sword at Sunset (1963).
- Hrosmunda is the White Queen in Chess Dream in a Garden (1993).
- Hugh Copplestone joins a group of strolling players before going on to university, in Brother Dusty-Feet (1952).
- Hugh Herriot is stable-lad then galloper to Claverhouse in 17th Century Scotland, in Bonnie Dundee (1983).
- Iseult is the wife of King Marc of Cornwall in Tristan and Iseult (1971).
- Jestyn is a young 10th-century English man who is sold into slavery to the Northmen in Blood Feud (1976).
- Justin is a young army surgeon who is loyal to the Emperor Carausius in The Silver Branch (1957).
- King Odysseus of Ithaca is a traveller who visits the Cyclops, the Island of the Dead and Circe in The Wanderings of Odysseus (1995).
- Liadhan is the half-sister of Levin who uses Red Phaedrus to bring back goddess-worship and set herself on the throne in The Mark of the Horse Lord (1965).
- Lovel is a boy with physical disabilities, but a deep knowledge of herbs and also a gift for healing, who eventually helps build St Bartholomew’s hospital and priory in The Witch’s Brat (1970).
- Lubrhin Dhu is the young man with an unusual talent for drawing in Sun Horse, Moon Horse (1977).
- Lucky is the dragon-pup in The Minstrel and the Dragon Pup (1993).
- Marcus Flavius Aquila follows in the steps of his disgraced father to join the Roman army, but in his first battle in England he is seriously injured and forced to leave—he sets out to the North to recover the lost Eagle of the Ninth legion (his father’s legion) in The Eagle of the Ninth (1954).
- Mordred is a knight who plots against his father, King Arthur, to bring down Arthur’s court and The Round Table in The Road to Camlann (1981).
- Nessan is the daughter of a clan chief, who has to deal with her fear of being offered as a sacrifice to the Black Mother in The Chief’s Daughter (1967)
- Oisin is Finn’s son in The High Deeds of Finn MacCool (1967).
- Owain, the last Roman-British wearer of the dolphin ring, is the only survivor of a Viking raid and the great battle of Aquae Sulis in Dawn Wind.(1961).
- Paris in Black Ships Before Troy: The Story of the Iliad (1993).
- Perdita from the English county of Devonshire, lives with her her father the rector in the quiet Broomhill village where she nearly always finds fairies or Pharisees and sees Queen Elizabeth, in The Queen Elizabeth Story (1950).
- Piers is a cousin of Tamsyn who shares her feeling for the sea and becomes a close friend in The Armourer’s House (1951).
- Prosper becomes second shield-bearer to Prince Gorthyn in the Companions, a 300 strong anti-Saxon-invasion fighting 7th Century brotherhood in The Shining Company (1990).
- Randall is a young, ill-treated dog-boy who is wagered and won in a game of chess between a lord and a minstrel in Knight’s Fee (1960).
- Red Phaedrus is an enslaved gladiator in northern Britain in the first century; he earns his freedom, and accepts an offer to impersonate the missing Midir, son of a king of a Gaelic Kingdom, which gets him more than he bargained for in The Mark of the Horse Lord (1965).
- Robin Hood is the legendary outlaw in Sherwood Forest, fighting tyranny with a small band of followers, in The Chronicles of Robin Hood (1950).
- Simon Carey is a farmer’s son who enlists with the Parliamentary forces (the Roundheads) in Simon (1953).
- Sir Bors, Sir Galahad, Sir Lancelot, and Sir Percival are four knights who search for the Holy Grail in The Light Beyond the Forest (1979).
- Sir Thomas Fairfax is husband of Anne and father of Moll, the impressive soldier in the English Civil War novel, The Rider of the White Horse (1959).
- Tamsyn is a girl from Devon who has to grow up with her uncle—a famous armourer—and his family in London, dashing her hopes of setting sail with her seafaring uncle, in The Armourer’s House (1951).
- Tethra is the seventh-born child of the Chieftain of the Epidii in The Changeling (1974).
- The Minstrel is a down-at-heel minstrel who finds a beautiful egg on the seashore, uses his harp-music to help the dragon-pup hatch—a pup which he then loses to a thief but retrieves, and together they cure the king’s son, in The Minstrel and the Dragon Pup (1993).
- Thomas Keith is an apprentice gunsmith from Edinburgh who becomes a young soldier in the Napoleonic wars in Blood and Sand (1987).
- Tristan is the warrior lover of Iseult in Tristan and Iseult (1971).
ROSEMARY SUTCLIFF (1920-92) 
I have discovered a Sutcliff Wiki, which does a much much more comprehensive job than I on characters in Rosemary Sutcliff’s books. See http://sutcliff.wikia.com/wiki/Index_of_Characters
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