He lived in Hlíðarendi in Fljótshlíð and is probably better known as Gunnar of Hlíðarendi (Old Norse: Gunnarr á Hlíðarenda).
Ash fell in the south at Flúðir, Fljótshlíð and Rangárþing ytri, and with rainfall in the north in Húsavík and Skagafjörður right before noon.