Mnemosyne in Greek and Roman Biography and Mythology
（Μνημοσύνη), i. e. memory, a daughter of Uranus, and one of
the Titanides, became by Zeus the mother of the Muses. (Hom.
Hymn. in Merc. 429; Hes. Th. 54, 915; Diod. 5.67; Orph. Hymn.
76; Cic. De Nat. Deor. 3.21.) Pausanias (1.2.4) mentions a
statue of Mnemosyne at Athens; and near the oracle of
Tropllonius she had a sacred well and a throne. (Paus. 9.39.4,
&c.) - A Dictionary of Greek and Roman biography and
mythology, William Smith, Ed.
Mnemosyne in Wikipedia
Mnemosyne (Greek Mνημοσύνη, pronounced /nɪˈmɒzɪni/ or /nɪ
ˈmɒsəni/), source of the word mnemonic, 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)
Erato (Love Poetry)
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...