Cadmus
Cadmus is the legendary founder of Thebes and one of the central ancestors of the Theban royal house. His search for Europa leads to the foundation of the city, the dragon's teeth and the birth of the Spartoi.
Explore Cadmus →Founding, family and divine catastrophe
The House of Cadmus
The mythology of Thebes begins with a founder searching for his sister and develops into one of Greek myth's richest family cycles: dragons, warriors born from the earth, Dionysus and the tragedy of Pentheus.
Why is Cadmus important in Greek mythology?
Cadmus is traditionally regarded as the founder of Thebes. His story establishes both the city and the family whose descendants dominate much of later Theban mythology.
After killing a dragon, Cadmus sows its teeth into the earth. Armed warriors called the Spartoi emerge from the ground.
One survivor, Echion, marries Cadmus' daughter Agave. Their son is Pentheus.
Another daughter of Cadmus, Semele, becomes the mother of Dionysus.
The conflict between Pentheus and Dionysus is therefore not an isolated tale. It is a catastrophe occurring inside the same family founded by Cadmus.
How did Cadmus found Thebes?
Cadmus originally searches for his missing sister Europa. His search eventually gives way to a new task, and divine guidance leads him toward the place where Thebes will be founded.
Before the settlement can be established, Cadmus encounters a dragon associated with Ares.
Killing the dragon creates the next stage of the story: the extraordinary birth of the Spartoi.
What were the Spartoi?
Cadmus sows the dragon's teeth into the earth. Fully armed warriors spring from the ground.
These warriors are called the Spartoi, meaning the Sown Men.
They fight one another until only a small number survive. Those survivors become important ancestral figures in the mythology and aristocratic traditions of Thebes.
Echion is one of those survivors.
The Family of Cadmus
Cadmus + Harmonia
↓
Semele · Agave · other Theban daughters
↓
Semele → Dionysus
Agave + Echion → Pentheus
Harmonia
Harmonia is the wife of Cadmus and queen of Thebes, whose marriage connects the founding of the city with the later royal family of Semele, Agave, Pentheus and Dionysus.
Explore Harmonia →Semele
Semele is a daughter of Cadmus and Harmonia and the mortal mother of Dionysus by Zeus. Her death and the unusual birth of Dionysus connect the House of Cadmus directly with one of the major Olympian gods.
Explore Semele →Agave
Agave is a daughter of Cadmus and Harmonia, wife of Echion and mother of Pentheus. She becomes central to the tragedy of Pentheus and Dionysus at Thebes.
Explore Agave →Echion
Echion is one of the Spartoi, the warriors said to have sprung from the dragon's teeth sown by Cadmus at Thebes. He becomes an ancestor of the Theban royal house through his marriage to Agave.
Explore Echion →Pentheus
Pentheus is the king of Thebes who resists the worship of Dionysus. His attempt to control the new god's followers ends with his death at the hands of the Bacchants, including his own mother Agave.
Explore Pentheus →Dionysus
God of wine, ecstasy, theatre, vegetation and ritual transformation.
Explore Dionysus →Why did Dionysus kill Pentheus?
Pentheus refuses to accept Dionysus and attempts to suppress his worship at Thebes.
The conflict is particularly striking because Dionysus belongs to Pentheus' own family. Dionysus is the son of Semele, while Pentheus is the son of Semele's sister Agave.
Dionysus draws Pentheus toward the Bacchants gathered outside the city.
Under divine madness, the worshippers attack Pentheus. His own mother Agave participates in his death without initially understanding that the victim is her son.
The episode transforms a challenge to divine authority into a tragedy that destroys the royal family from within.
Related Theban Myths
The Search for Europa
After Europa is carried away by Zeus, Agenor sends her brothers Cadmus, Phoenix and Cilix to find her, but their unsuccessful search leads them toward new lands and new dynasties.
Read this myth →Cadmus Founds Thebes
Searching for Europa, Cadmus follows an oracle into Greece, kills a dragon and becomes the legendary founder of Thebes.
Read this myth →Cadmus and Harmonia
The founder of Thebes marries Harmonia in a celebrated divine wedding, but suffering follows their family and eventually transforms them both.
Read this myth →Dionysus and Semele
Semele dies after seeing Zeus in his full divine form, but the unborn Dionysus is saved and later born from Zeus himself.
Read this myth →Pentheus and Dionysus
King Pentheus refuses to recognise Dionysus and attempts to suppress his worship, leading to one of the darkest tragedies of the House of Cadmus.
Read this myth →