Greek Mythology
Apollo
Apollo does not marry or have many children, though sometimes he falls in love. Apollo is a wise god, the god of reason, logic, self-control and calm - like Spock in Star Trek. He can tell the future, and his temple at Delphi was a famous oracle, a place where people went to find out what was going to happen. One of his sons is Asclepius, the god of medicine. Apollo is also a musician who plays the lyre.
Zeus
Zeus is a sky god and people thought of him as living on top of a mountain being known to some people as Mount Olympus, and when he is angry he throws lightning bolts out of the sky at people. Zeus probably was not worshiped in Greece before the Indo-European Greeks arrived there in the Middle Bronze Age.
Hermes
Hermes is a god of boundaries, borders and edges. Because of this, he's also in charge of things that cross borders, like messages or travelers. He is the messenger of the Greek gods. His father, Zeus, often sends Hermes to earth when he has something to say to a person.
Poseidon
Poseidon is the god of the seas. With his staff that he carries around, he can hit the group with it to create an earth quake. Most of the people that follow him feel as if he is unpredictable. He is fast, and with one move, he could cause chaos.
Athena is one of the younger Greek goddesses, she is Zeus's daughter. Her mother was Metis. The story is that Zeus swallowed Metis, already pregnant with Athena, and then Athena was born, fully grown and armed, out of the head of Zeus. One day Zeus complained that he had a headache, and Hephaistos came and banged him on the head with an axe and out popped Athena. Athena has no husband. She doesn't fall in love and she doesn't have children.