Note 1384 — Chapter X · THE REIGN OF EADWARD FROM THE DEATH OF THE ÆTHELING TO THE DEATH OF THE KING.[1258] 1057–1066.
Reading edition
This seems implied in the verses of the Biographer, p. 425;
“Quis canit occiduos modulator in orbe Britannos,
Gentem Caucasiis rupibus ingenitam,
Indomitam fortemque nimis regnante Griphino,
Nec jam contentam finibus occiduis?
Ultra sed sceleris cursum tulit arma Syvernæ,
Vimque ejus regnum pertulit Angligenûm.”