Overview
Iset (or Isis) was a queen of the Eighteenth Dynasty of Egypt, and she was named after goddess Isis. She was a secondary wife or concubine of Thutmose II.
Biography
Iset was the mother of Thutmose III, the only son of Thutmose II. Her son died on 11 March 1425 BC and her name is mentioned on his mummy bandages and a statue found in Karnak.
Although in these later instances Iset is referred to as Great Royal Wife, during the reign of Thutmose II the great royal wife was Hatshepsut. Thutmose II died in 1479 BC and, after his death, Hatshepsut became regent for the young king Thutmose III. Thutmose III became the head of the armies of Egypt as he grew up.
Hatshepsut ruled as pharaoh until her death in 1458 BC when her co-regent, Thutmose III, became pharaoh. At that time Iset received the title of "King's Mother" (since her son had become pharaoh) and she may then have been designated as a royal wife if she had not been previously when he was the co-regent.
From Wikipedia (CC BY-SA 4.0).