London is both a favored seat of royal power and the final destination in the journey of Bendigeid Fran’s head. The city’s history links Lludd’s rebuilding and generosity with a later tradition in which the head’s concealment at the White Mount protects the Island of Britain from invasion from across the sea.

Names and Royal Setting

After his father’s death, Lludd became ruler of the Island of Britain. He rebuilt London’s walls and surrounded the city with numerous towers, then had its citizens construct houses said to surpass those in other kingdoms. Though he possessed many castles and cities, London was the one he loved most, and he spent most of the year there.

The account traces the city’s names through this royal association: it was called Caer Lludd, then Caer London, and, after the arrival of a stranger-race, London or Lwndrys. The sequence presents the city as both a place shaped by a ruler and a settlement whose name changes across successive histories.

Lludd’s Rebuilding and Rule

London’s defenses and dwellings are part of a broader picture of Lludd’s prosperous reign. The city’s many towers give its rebuilt walls a conspicuous scale, while the houses distinguish it from other kingdoms. Lludd is also described as a mighty warrior who generously provided meat and drink to those who sought them. His preference for London was therefore expressed not only through construction but through sustained residence: the city became the center of his life for most of each year.

The Head’s Journey to the White Mount

London also stands at the end of the instructions given by Bendigeid Fran before his followers cut off his head. He commanded them to carry it to the White Mount in London and bury it there facing France. The journey was to include a seven-year feast at Harlech, accompanied by the birds of Rhiannon, followed by eighty years at Gwales in Penvro. The head would remain uncorrupted there until the company opened the door facing Aber Henvelen and Cornwall; after that, they were to leave and continue directly to London.

When Heilyn son of Gwynn opened the forbidden door to test what had been said, the company became conscious of the evils they had suffered, the friends they had lost, and their lord’s fate. Their distress drove them onward. They buried the head at the White Mount, completing the route that had been prescribed long before.

Concealment and Protection

The burial at London is identified as the third goodly concealment, while the opening of the door at Gwales is the third ill-fated disclosure. The account connects the hidden head to the safety of the island: no invasion from across the sea came while it remained concealed. London thus serves as more than the journey’s geographical endpoint. It is the place where the head’s protective concealment is established, after the breach of the prohibition has made continued waiting impossible.