Dionysus

Roman Name : Bacchus

Parents: Zeus and Semele (she is a mortal)

Siblings: He had no brothers or sisters because his mother who is mortal died because she saw Zeus in person. She asked Zeus to grant her one wish and made him promise that he would grant it. Swearing that he would Zeus was ready to hear her request. Semele's one wish was to see Zeus in his true form. She asked for this because when Zeus came to her at night to lay with her he came in an invisible state. Semele did not know which god she was a lover of but she was just happy to be one. When she asked for Zeus to show his true form he had to because he promised, once he showed himself Semele turned to ashes and died. 

Relationships: He was married to Ariadne but he slept around with many many women and had children with all of them. Some of those women are Aphrodite, Aura, Beroe, Kronois, Nikaia, Althaia, Erigone, Pallene, Physkoa, Ampelos, Polymnos.
Children: Oenopion, Staphylos, Thoas, Peparethus, Phanus, Eurymedon, Euanthes, Latramys, Tauropolis, Ceramus, Maron, Iacchus, Priapus, Hymen, The Graces (Pasithea, Euphrosyne, thalia), Phthonus, Deianira, Comus.

 God Of: He invented wine which is the reason why he is the god of it. 

Symbol: The Ivey, Snake, and Grape are the symbols of Dionysus. 

Greatest Accomplishments: He was worried about his mother, who was in the underworld, so he went under and brought her to Mount Olympus. 

Worst Accomplishments: Because he was the father of wine he was always drunk and if he got angry he would torture people and sometimes without even being angry he would just go into this rage of madness and be brutal towards others.