A 12th-Century Mansion In Wellington

In 2013, at a construction site in Wellington, British archaeologists discovered the foundations of a 12th-century mansion no one knew existed. During the dig, they also uncovered ceramic roof tiles and floor tiles with intricate designs similar to the ones at Glastonbury Abbey. These suggested the mansion was of high status and historically significant.
I'm wondering, if s/o writes:
"Faaaake - how can it be?
The US exist since 1776-07-04 ! Nothing can be before!
Don't be a woke leftist, do your own research, touch some grass and never trust science or the universities!"
Bomb! What the fuck?