There is something mysterious, or at least curiously coincident, about this Welsh "Cae Naef," or "Heaven's Field," as this latter, according to Bede, is the name of the site of the previous battle in 635, when Oswald defeated and slew Cadwalla. The same authority likewise refers to it as being fought "at a place called Denises-burn, that is Denis's-brook." Dr. Giles says "Dilston is identified with the ancient Deniseburn, but on no authority." Dilston is situated about two miles from Hexham. Sharon Turner says--"Camden places this battle at Dilston, formerly Devilston, on a small brook which empties into the Tyne." He adds, "Smith, with greater probability, makes Errinburn as the rivulet on which Cadwallon perished, and the fields either of Cockley, Hallington, or Bingfield, as the scene of the conflict. The Angles called it Hefenfield, which name, according to tradition, Bingfield bore." Dr. Smith says that Hallington was anciently Heavenfelth, but adds that probably the whole country from Hallington southward to the Roman wall was originally included in the name. On the place where Oswald is said to have raised a cross, as his standard during the battle, a church was afterwards erected. Thus it would at first sight appear that Oswestry might enter into competition with Bingfield for the site of the Heavenfield struggle, rather than with Winwick for that of Maserfeld. There is, however, one important fact which fatally militates against this. Bede says, referring to the Heavenfield where Cadwalla met his death, the "place is near the wall with which the Romans formerly enclosed the island from sea to sea, to restrain the fury of the barbarous nations, as has been said before." The greater probability is as the two engagements are intertwined by the Welsh Bruts, and in the Oswestry and Geoffrey traditions, that the place owes its designation directly to neither the one nor the other; but that, like the sites I have mentioned, the dedication of a church to the saint has been sufficient to confer his name on the locality. That a neighbouring well, under such circumstances, should receive a similar designation, is too ordinary a matter to require special consideration.