What are the family relationships of Hercules?

Alcmene was the mother of Hercules.. She was the grand-daughter of Perseus and the wife of Amphitryon, but Amphitryon killed her father, Electryon, by accident.

Amphitryon, a grandson of Perseus and son of King Alcaeus of Tiryns, was the step-father of Hercules and father of his twin brother Iphicles. He accidentally killed his uncle and father-in-law, Electryon, and was driven out by another uncle, Sthenelus.

Deianeira was Hercules' last mortal wife. She was the daughter of Althaea and Oeneus or Dexamenus, king of Olenus.

Eurystheus is Hercules' cousin an king of Mycenae and Tiryns.

Iolaus, son of Iphicles, was a charioteer, companion, and favorite of Hercules. He may have married Hercules' wife Megara after Hercules killed their children in one of his fits of madness.

Iphicles was the twin brother of Hercules. He was born of Alcmene and his father was Amphitryon. Iphicles was the father of Hercules' favorite, Iolaus.

Megara another wife - get got her for saving the Thebans from the tribute to the Minyans, Hercules was awarded Megara, daughter of King Creon for wife. They had three children.