Short answers, pulled from the story.
The Roman province of Britannia emerged in 43 AD following the conquest ordered by Emperor Claudius. A frieze discovered at Aphrodisias in 1980 depicts a bare-breasted female warrior labeled BRITANNIA writhing under the heel of that emperor.
Samuel Pepys claimed Frances Teresa Stuart modeled the Britannia figure who refused to become mistress of Charles II. Her image first appeared on English farthings in 1672 following pattern versions from 1665.
Britannia's spear transformed into a trident in 1797 to symbolize Royal Navy victories. A helmet was added to coinage designs in 1825 marking further evolution of the figure.
SS Britannia sank in 1941 after being hit by German cruiser Thor losing 122 crew members. RMS Britannia was the first steam ocean liner owned by Samuel Cunard in 1840.
King George V owned a racing yacht named HMY Britannia scuttled in 1936 while K1 Britannia serves as a 1994 replica. The constitutional unification of England with Scotland occurred in 1707 making Britannia an increasingly important symbol among Britons.