Neptune (M) married Amphitrite (F).
Their child was Triton (M).

Ceres (F) married Jupiter (M).
Their child was Proserpina (F).

Pluto (M) married Proserpina (F).

Mnemosyne (F) married Jupiter (M).
Their children were Clio (F), Calliope (F), Thalia (F), Euterpe (F), Urania (F), Melpomene (F), Terpsichore (F), Polyhymnia (F) and Erato (F).

Clio (F) had a child, Hymen (M).

Calliope (F) had a child, Orpheus (M).

Orpheus (M) married Eurydice (F).

Typhœus (M) had three children, Hydra (M), Cerberus (M) and Chimæra (M).

Chimæra (M) had two children, Nemean Lion (M) and Sphinx (F).

Pontus (M) had a child, Phorcys (M).