Mnemosyne in Wikipedia

Mnemosyne (Greek Mνημοσύνη, pronounced /nɪˈmɒzɪni/ or /nɪ ˈmɒsəni/), source of the word mnemonic,[2] was the personification of memory in Greek mythology. This titaness was the daughter of Gaia and Uranus and the mother of the nine Muses by Zeus: Calliope (Epic Poetry) Clio (History) Erato (Love Poetry) Euterpe (Music) Melpomene (Tragedy) Polyhymnia (Hymns) Terpsichore (Dance) Thalia (Comedy) Urania (Astronomy) In Hesiod's Theogony, kings and poets receive their powers of authoritative speech from their possession of Mnemosyne and their special relationship with the Muses...