One architect that was talked about in the book is the Anglo Saxon helmet (l. 38) it's from the 6th to 7th centuries and it was excavated at Sutton Hoo, Suffolk. Sutton Hoo is a burial site that holds many artifacts. Since it's open up there had been many grave robbers and they have taken up many other old artifacts.
In Beowulf it talks about a “Newly constructed barrow stood waiting, on a wide headland close to the waves, it's entry that was secured. It also talks about the great hall it’s a hall where the king and his warriors would gather to consume