In Norse mythology, Olvaldi was a giant and the father of Thjazi, Gangr and Idi as well as the grandfather of Skadi. According to Skáldskaparmál, Olvaldi was very rich in gold, and when he died his three sons divided his inheritance among themselves, measuring it out by each in turn taking a mouthful. For this reason the expressions "speech of Thjazi, Gangr or Idi" and "Idi's shining talk" are kennings for gold.