Mythology & Beliefs: Dione In Greek and Roman Mythology, Dione was a Titan goddess; mother by Zeus of Aphrodite.
Dione in Greek and Roman Biography and Mythology
（Διώνη), a female Titan, a daughter of Oceanus and Tethys
(Hesiod. Theog. 353), and, according to others, of Uranus and
Ge, or of Aether and Ge. (Hygin. Fab. Praef.; Apollod. 1.1.3.)
She was beloved by Zeus, by whom she became the mother of
Aphrodite. (Apollod. 1.3. sec; i.; Hornm. Il. 5.370, &c.) When
Aphrodite was wounded by Diomedes, Dione received her daughter
in Olympus, and pronounced the threat respecting the
punishment of Diomedes. (Itom. Il. 5.405.) Dione was present,
with other divinities, at the birth of Apollo and Artemis in
Delos. (Hom. Hymn. in Del. 93.) At the foot of Lepreon, on the
western coast of Peloponnesus, there was a grove sacred to her
(Strab. viii. p.346), and in other places she was worshipped
in the temples of Zeus. (Strab. vii. p.329.) In some
traditions she is called the mother of Dionysus. (Schol. ad
Pind. Pyth. 3.177; Hesych. s. v. Βάκχου Διώνης). There are
three more mythical personages of this name. (Apollod. 1.2.7;
Hyg. Fab. 83; Pherecyd. p. 115, ed. Sturz.) - A Dictionary of
Greek and Roman biography and mythology, William Smith, Ed.
Dione in Wikipedia
Dione, (Greek: Διώνη) pronounced /daɪˈoʊni/, in Greek
mythology is a vague goddess presence who has her most
concrete form in Book V of Homer's Iliad as the mother of
Aphrodite. Aphrodite journeys to Dione's side after she has
been wounded in battle while protecting her favorite son
Aeneas. In this episode, Dione seems to be the equivalent of
Gaia the Earth Mother, whom Homer also placed in Olympus, and
to that extent might be classed as a "mother goddess".
Dione's Indo-European name is really less a name than simply a
title: the "Goddess", etymologically a female form of Zeus.
After the Iliad, Aphrodite herself was sometimes referred to
as "Dionaea" and even "Dione", just "the goddess" (Peck 1898).
Roman "Diana" has a similar etymology but is not otherwise
connected with Dione...