Thynghowe = Moot Mount = Discussion Place? From the title, I thought it would be a burial mound.
But what in heck is a “perambulation document”? Is that a “metes & bounds” land-tract description?
perambulation - a walk around a territory
(a parish or manor or forest etc.) in order
to officially assert and record its boundaries
Das Ding - conference place.
Remember your viking roots. ;)
(Thingvellir - birthplace of American Republicanism, and quite litterally, the birthplace of America.)