Poseidon - Neptune
Amphitrite - Salacia
Triton - Triton
Zeus - Jupiter
Hera - Juno
Ares - Mars
Eris - Discordia
Hebe - Juventas
Hephaestus - Vulcan
Aphrodite - Venus
Eos - Cupid
Fates - Parques
Artemis - Dianna
Apollo - Apollo
Athena - Minerva
Dionysos - Bacchus
Heracles - Hercules
Gaia - Terra
Hades - Pluto
Persephone - Prosperina
Hecate - Trivia
Demeter - Ceres
Justicia - Dike
Victoria - Nike
Nemesis - Invidia
Hypnos - Somnus
Kronos (even if he's a Titan) - Saturn
Eirine - Pax
Selene - Luna
Iris - Iris
Hermes - Mercury
Eos - Aurora
Pan - Faunus
There's a game where you name one side and you have to find the equivalent if you want to check it out ->
link
And this is a good site too ->
link