 After the Jomvikings fleet has been defeated, Haakon's men weigh the hailstones that had fallen during the storm, to detect "what power" Þorgerðr and Irpa had, and they find that the hailstones weigh an ounce each.Þorgerðr and Irpa are again mentioned together in chapter 88 of "Njáls saga", set in the 10th and 11th centuries.Here, Hrapp breaks into the temple owned by Haakon and Gudbrand while Haakon is at a feast at Gudbrand's home.