Which Titaness was the goddess of memory and mother of the Muses?

Mnemosyne was the Titaness who personified memory and became the mother of the nine Muses.

She was a daughter of Uranus, the sky, and Gaia, the earth, making her one of the elder Titans. In Hesiod’s tradition, Zeus united with Mnemosyne for nine consecutive nights, and each night produced one of the Muses. Their names were Calliope, Clio, Euterpe, Erato, Melpomene, Polyhymnia, Terpsichore, Thalia, and Urania.

Mnemosyne’s role mattered especially in an oral culture, where poets relied on memorization to preserve epic traditions. Greek poets could invoke her and the Muses before reciting a story. Her name comes from mnēmē, meaning “memory,” and it is related to modern words such as mnemonic.

A related myth places a river or pool called Mnemosyne in the underworld. Initiates were instructed to drink from it rather than Lethe, the river of forgetfulness, so they could retain spiritual knowledge after death.