Britannia only swapped her spear for a trident in 1797
The helmeted woman with a trident on British coins began as a Roman idea. A marble frieze from the first century shows her crushed beneath Emperor Claudius. It took Elizabethan navigators, Stuart kings and naval victories to turn a conquered province into Britain's proud emblem of sea power.
The name came before the figure. A Greek explorer, Pytheas, wrote of islands called Prettanike in the 4th century BC, a form built on the native Brittonic word Pretanī. By the 1st century BC Britannia had displaced Albion as the usual Latin label for the main island, and after the Roman invasion of AD 43 it meant the province covering roughly the southern two-thirds. The north, Caledonia, stayed mostly beyond reach, fenced off by Hadrian's Wall, while Ireland, Hibernia, was never invaded at all.
Rome first imagined Britannia as a defeated woman. A frieze found at Aphrodisias in 1980 shows her writhing under the heel of Claudius, who took the title Britannicus. Under Hadrian she grew more dignified, and by the 2nd century she was a seated goddess with spear, shield and Corinthian helmet, looking much like Minerva. Some coins perched her on a globe above waves, a picture of Britain at the edge of the known world.
The figure faded after Rome left, though the name lived on in Welsh writing and even crossed the Channel to Brittany, which is why the island later needed the label Great Britain to tell the two apart. John Dee revived the personification in 1576, showing Britannia kneeling on a shore and urging Elizabeth I to build up her navy. Charles II put her on a farthing in 1672, the first English coin to carry her.
After England and Scotland united in 1707, she became the emblem of maritime might, celebrated in the song Rule, Britannia! Naval triumphs turned her spear into a trident in 1797, and a helmet joined the coinage in 1825. Victorian artists added ships, the lion and a Union Flag shield; William Dyce painted Neptune handing her his trident for Queen Victoria's Osborne House. She featured on every modern British coin series until a 2008 redesign, and returned on a new £2 coin in 2015.
Source: Britannia
