Mnemosyne ( or ; , ), source of the word mnemonic, was the personification of memory in Greek mythology. A Titanide, or Titaness, she was the daughter of Uranus and Gaia, and the mother of the nine Muses by Zeus:

• Calliope (Epic Poetry)
• Clio (History)
• Euterpe (Music)
• Erato (Lyric Poetry)
• Melpomene (Tragedy)
• Polyhymnia (Hymns)
• Terpsichore (Dance)
• Thalia (Comedy)
• Urania (Astronomy)