The Thames, the Tower Bridge and the Tower of London / sketch Robert Trudeau, a photo by trudeau on Flickr.
The invisible antecedent to the kings' castle called the Tower of London involves hundreds of years of being bullied by invaders.
Celtic People lived in Britain before Roman times; the Celts started coming to Britain from Europe around 700 BC.
In the year AD 43, the Romans invaded Britain.
The Romans mainly settled in the south of Britain. They called this land Britannia. They ruled over it for nearly 400 years.
Sea-raiders from Europe invaded and settled in Britain. Some of the invaders were Angles, some were Saxons, some were Jutes. We call them all Anglo-Saxons.
In AD 793, raiders attacked the monnastery at Lindisfarne, a small island off the north-east coast of England. They were Vikings from Scandinavia. Vikings terrorized parts of the world for about 300 years.
The prayer said in many English churches during the long period of incursions from the Vikings was "Oh Lord, protect us from the wrath of the Northmen!"