The wife of Hades is Persephone, the goddess of springtime, vegetation, and maidenhood (in addition to being the queen of the Underworld). She is the daughter of Zeus and Demeter, the goddess of the harvest. It should be noted that Persephone was not a willing bride to Hades--they did not get married because they were wildly in love (but, to be honest, few Greek gods do that). Hades tricked Persephone into marrying him. Hades fell in love with Persephone (and it was certainly not requited), but Demeter was very protective of her daughter, so Hades ended up abducting Persephone while her mother was away and brought her down to the Underworld. Demeter searched for her, letting the harvests she was in charge of wither and die while she looked. The other gods and the humans lamented this, so Zeus made Hades return Persephone to Demeter, but before Persephone left the Underworld, he had her eat some pomegranate seeds. Because she had tasted food from the Underworld, she had to return there for three months of the year (that is why we have the winter season).