“Marcus took it from him and bent to examine it. It was a heavy signet-ring; and on the flawed emerald which formed the bezel was engraved the dolphin badge of his own family …” (The Eagle of the Ninth)
The Eagle of the Ninth was first published in 1954. Various books are linked by this Dolphin ring of the Aquila family. In TThe Silver Branch from 1957 Flavius, a descendent of Marcus, and his kinsman Justin lead a resistance movement to the Saxon attacks on Britain.Then in Frontier Wolf, published in 1980, Alexios (“a scion of Marcus’ blood”) leads the Frontier Wolves who manned an outpost in the far north of Roman Britain. The much earlier (1959) The Lantern Bearers was also set in Roman Britain, during the coming of Anglo-Saxon invaders. The nineteen-year-old Aquila (again, a descendant of Marcus) sees his home and family destroyed by Anglo-Saxon invaders and becomes a slave, before escaping to join the free men in Wales where he meets a young leader Artos the Bear (Rosemary Sutcliff’s interpretation of King Arthur). Sword At Sunset (1963) follows the story of Artos the Bear.
In Dawn Wind, published in 1961, Owain is fourteen when the British war-hosts gather to hold what territory they still had against the Saxons. He hopes that one day ‘the dawn wind might blow and some part of the Britain he had known might be restored.’ Owain too is descended from Marcus. The Dolphin ring turns up again in Sword Song (1991), and finally in The Shield Ring (1956) a group of Vikings, including Beorn – last descendent of the Marcus line, though now with Norse blood, lives in the Fells of Lakeland, trying to hold out against the resources of Norman England.
In summary, chronologically:
Frontier Wolf (1980) – 4th century
The Lantern Bearers (1959) – 5th century
Sword At Sunset (1963) – 5th century
Dawn Wind (1961) – 6th century
Sword Song (1997) – 10th century
The Shield Ring (1956) – 11th century
“Angharad wore around her neck a heavy golden ring, much battered and set with some dark green stone……(with a dolphin) engraved on it” (Sword Song)