King Olaf passed all the winter with King Ethelred, and had a great
battle at Hringmara Heath in Ulfkel's land, the domain which Ulfkel
Snilling at that time held; and here again the king was victorious. So
says Sigvat the skald:--
"To Ulfkel's land came Olaf bold,
A seventh sword-thing he would hold.
The race of Ella filled the plain--
Few of them slept at home again!
Hringmara heath
Was a bed of death:
Harfager's heir
Dealt slaughter there."