A cross unearthed at the excavation of Arthur’s supposed grave at Glastonbury in 1191. The inscription on the cross read
Hic iacet sepultus inclitos Rex Arturius in insula avalonia
The cross was lost but, in recent times, a pattern-maker named Derek Mahoney claimed to have found it and reburied it.
See also
King Arthur and Guenevere’s Grave | The Legend of King Arthur