Rhiannon is the most memorable woman of Welsh legend. She first appears riding slowly on a shining white horse along a road near the mound of Gorsedd Arberth — and no rider, however fast, can catch her. She has come from the Otherworld by her own choice to marry a mortal prince. She is clever, eloquent, and generous, and she endures one of the cruellest punishments in all of medieval literature with dignity. Her birds sing so sweetly that listeners forget the passing of time.
Rhiannon appears in the First and Third Branches of the Mabinogi, the four interconnected tales at the heart of the collection of medieval Welsh stories now known as the Mabinogion. These tales were written down in the eleventh to thirteenth centuries and preserved in the fourteenth-century White Book of Rhydderch and the Red Book of Hergest, but they draw on far older traditions. Many scholars believe that Rhiannon was once a goddess.
The Name
The name Rhiannon is generally derived from the reconstructed Brittonic *Rīgantonā, meaning “great queen” or “divine queen.” It is closely parallel to the Irish Mór-Ríoghain, the Morrígan, “Great Queen,” though the two figures are very different in character. The name suggests that Rhiannon was originally a goddess of sovereignty.
The Rider on the White Horse
The First Branch, Pwyll Pendefig Dyfed (“Pwyll, Prince of Dyfed”), tells the story. Pwyll, prince of Dyfed in south-west Wales, was holding court at Arberth. Nearby was a mound, Gorsedd Arberth, with a strange property: any nobleman who sat on it would either receive blows and wounds, or see a wonder.
Pwyll sat on the mound. He saw a woman riding past on a great, pale-white horse, dressed in shining gold silk. He sent a servant on foot to find out who she was, but the servant could not catch her, though she seemed to be riding at an easy walking pace. The next day Pwyll sent his fastest horseman, but the faster he rode, the further ahead of him she was, though her horse never changed its pace.
On the third day, Pwyll himself rode after her, spurring his horse to its limit, and still could not catch her. At last he called out: “Maiden, for the sake of the man you love best, wait for me.”
“I will gladly,” she said, “and it would have been better for your horse if you had asked long ago.”
Rhiannon’s Choice
She lifted her veil and told Pwyll who she was: Rhiannon, daughter of Hefeydd the Old. She was being forced to marry a man she did not want, Gwawl son of Clud. She had come to find Pwyll because she would have no one else. Would he have her?
Pwyll said he would choose her above all the women in the world. They agreed to meet at her father’s court a year later to be married.
This scene is remarkable in medieval literature. Rhiannon is not a passive princess to be won. She chooses her husband, pursues him (by letting him pursue her), and tells him plainly what she wants.
The Badger in the Bag
A year later, Pwyll went to the wedding feast at Hefeydd’s court. In the middle of the feast, a tall young man with auburn hair came in and asked Pwyll for a favour. Pwyll rashly promised him anything he asked. The stranger was Gwawl, Rhiannon’s rejected suitor, and he asked for Rhiannon.
Rhiannon was furious with Pwyll: “Never was a man more stupid.” But she had a plan. She arranged to marry Gwawl in a year’s time, and gave Pwyll a magic bag that could never be filled.
A year later, at Gwawl’s wedding feast, Pwyll came in disguised as a beggar in rags and asked Gwawl to fill his little bag with food. Gwawl agreed, but no matter how much food went in, the bag never filled. Pwyll said it would never be full until a nobleman stood in it and trod the food down, saying “Enough has been put in here.” Gwawl stepped in. Pwyll pulled the bag over his head and tied it shut. Then Pwyll’s men burst in and played “badger in the bag,” each one kicking or striking the bag as he entered. Gwawl, humiliated, gave up his claim to Rhiannon and swore to seek no revenge.
Pwyll and Rhiannon were married.
The Lost Child and the False Accusation
For two years Rhiannon had no child, and Pwyll’s nobles demanded he take another wife. In the third year, she gave birth to a son. On the night of the birth, six women were set to watch over mother and child. All of them fell asleep, and when they woke, the baby was gone.
Terrified of being punished, the women killed a litter of puppies, smeared the blood on Rhiannon’s face and hands as she slept, and scattered the bones around her. They swore that she had killed and eaten her own child.
Rhiannon protested her innocence, but no one believed her. Pwyll refused to divorce her, but she was sentenced to a strange and humiliating penance: for seven years she had to sit by the mounting block at the gate of the court at Arberth, tell her story to every stranger who arrived, and offer to carry them on her back into the court, like a horse.
The Return of Pryderi
Meanwhile, far away in Gwent Is Coed, a lord named Teyrnon had a mare that gave birth to a foal every May Eve, but the foal always disappeared. One year he stayed up to watch. As the foal was born, a monstrous clawed arm came through the window and seized it. Teyrnon cut off the arm with his sword and heard a great scream. He rushed out but could see nothing in the dark. When he came back, he found a baby boy wrapped in a silk cloak lying at the door.
Teyrnon and his wife raised the boy, who grew with astonishing speed. As he grew, Teyrnon heard the story of Rhiannon’s punishment, and saw that the boy looked exactly like Pwyll. He realized who the child must be.
Teyrnon brought the boy to Arberth. Rhiannon, at her mounting block, offered to carry them in, and they refused. At the feast, Teyrnon told his story, and everyone recognized the boy as Pwyll’s son. Rhiannon exclaimed that if this was true, she was delivered of her anxiety — in Welsh, pryder. And so the boy was named Pryderi.
The Third Branch: Manawydan
After Pwyll’s death, Rhiannon married Manawydan son of Llŷr, a wise and gentle nobleman. In the Third Branch, a magical mist falls over Dyfed, and all the people and animals vanish, leaving only Rhiannon, Manawydan, Pryderi, and Pryderi’s wife Cigfa.
Later, Pryderi and Rhiannon enter a magic fortress and touch a golden bowl, and they are trapped, unable to speak, and carried away. They are imprisoned in the Otherworld. In a reversal of her earlier penance, Rhiannon is forced to wear the collars of asses around her neck, and Pryderi the door-knockers of the gate. Manawydan eventually frees them through patience and cleverness, catching the magician behind the enchantment — Llwyd son of Cil Coed, a friend of Gwawl, avenging the “badger in the bag.”
The Birds of Rhiannon
Rhiannon’s birds are mentioned in the Second Branch and in the Arthurian tale Culhwch and Olwen. They sing so sweetly that “the dead awake and the living fall asleep.” In the Second Branch, after the terrible war with Ireland, seven survivors spend seven years at Harlech listening to the birds of Rhiannon, and the time passes as if it were a single day.
Rhiannon and Epona
Many scholars have connected Rhiannon with Epona, the Gaulish horse goddess who was widely worshipped across the Roman Empire, especially by cavalrymen. Epona was often depicted seated side-saddle on a horse, or between two horses, and was associated with fertility and the Otherworld.
The parallels are striking: Rhiannon first appears on a white horse; her son is born in connection with a foal; and her penance requires her to act as a horse, carrying visitors on her back. Some scholars see in her a memory of a horse goddess whose myths have been transformed into a medieval romance.
Rhiannon Today
Rhiannon has become one of the most celebrated figures of Welsh culture. Evangeline Walton’s novels retold the Mabinogi in the 1930s–1970s. Fleetwood Mac’s song “Rhiannon” (1975), written by Stevie Nicks after she read a novel mentioning the name, made her world-famous; Nicks later learned the story of the Welsh goddess and embraced it. In modern paganism, Rhiannon is honoured as a goddess of sovereignty, horses, and patient endurance.
Last reviewed: September 2026.