|Saint Sennen Church - image by Andrewrabbott (talk).Andrewrabbott at en.wikipedia [Public domain], from Wikimedia Commons|
It is to the effect that some Saxon kings used the stone as a dining-table. The number has been variously stated; some traditions fixing on three kings, others on seven. Hals is far more explicit; for, as he says, on the authority of the chronicle of Samuel Daniell, they were --
Ethelbert, 5th king of Kent;
Cissa, 2d king of the South Saxons;
Kingills, 6th king of the West Saxons;
Sebert, 3d king of the East Saxons;
Ethelfred, 7th king of the Northumbers;
Penda, 5th king of the Mercians;
Sigebert, 5th king of the East Angles,--who all flourished about the year 600...
...The only tradition which is known amongst the peasantry of Sennen is, that Prince Arthur and the kings who aided him against the Danes, in the great battle fought near Vellan-Drucher, dined on the Table-men, after which they defeated the Danes."
Map - Sennen Church
Map - Bosavern
[I cannot find the location of the battle of Vallan-Drucher - Though it is described in The Folk-Lore Journal Volume 5 1887 as being near Vallan Dreath, which is very close to Sennen Cove.
Perhaps unsurprisingly the Table-Men / Saxon bit of the folklore is currently very unfashionable on the internet, and, I suspect, in Kernow / Cornwall. The only modern mentions I have found to it is to King Arthur's battle with the Danes (being more acceptably 'British' and 'Celtic')]