🟢 Why Were the Children Green? The 12th-Century Mystery Solved

two young girls standing next to each other in a garden

Imagine stumbling upon two terrified children in a Suffolk village, their skin a vivid, unnatural shade of emerald green, speaking a language no one understands, and refusing to eat anything but raw green beans. This isn’t a scene from a modern fantasy novel; it is the chilling, real-world account of the Green Children of Woolpit, a mystery that has baffled historians, doctors, and folklorists for nearly 90 years. Was it a curse from the underworld, a case of alien abduction, or a tragic tale of malnourished refugees?

At History Hidden™, we’ve dug through centuries of archives to separate the myth from the medical reality. While the story sounds like pure folklore, our investigation reveals a heartbreaking truth rooted in severe anemia and the plight of Flemish refugees fleeing persecution in the 12th century. We’ll walk you through the science of chlorosis, the historical context of the “Land of St. Martin,” and exactly what happens when a child’s skin turns green today. By the end of this article, you’ll know why the boy died, why the girl survived, and how a simple diet of beans changed history forever.

Key Takeaways

  • The Mystery Revealed: The “green” skin was likely a symptom of chlorosis (severe iron-deficiency anemia) caused by malnutrition, not magic or alien biology.
  • Historical Context: The children were probably Flemish refugees fleeing religious persecution, with the “Land of St. Martin” being a metaphor for their homeland or a distorted memory of their journey.
  • Medical Reality: In modern times, green skin in children is almost always caused by temporary staining from food/dyes or serious conditions like jaundice and cyanosis, requiring immediate medical attention.
  • The Outcome: While the boy succumbed to his condition, the girl, Agnes, recovered, learned English, and integrated into society, proving that proper nutrition can reverse even the most bizarre symptoms.

Table of Contents


Before we dive into the murky, mossy depths of history, let’s get the imediate facts straight. If you’re here because your toddler just ate a handful of spinach and looks like a Smurf, or you’re a history buff obsessed with the 12th-century mystery of Woolpit, here is your rapid-fire briefing:

  • Real vs. Myth: The “Green Children” of Woolpit are a legendary folklore tale, not a documented medical phenomenon of green-skinned humans.
  • The Real Culprit: In modern times, green skin in children is almost always caused by chlorosis (a form of anemia), jaundice, or temporary staining from foods like spinach or artificial dyes.
  • The Woolpit Story: Two children appeared in a Suffolk village in the 12th century, spoke an unknown language, and refused all food except green beans.
  • The Outcome: The boy died; the girl, Agnes, survived, lost her green hue, learned English, and eventually married a local archdeacon.
  • No Magic: There is no evidence of an underground alien race or a magical “Land of St. Martin.” The most likely historical explanation involves Flemish refugees suffering from malnutrition.

If you are worried about a child’s skin color right now, skip the history books and call a doctor. But if you are ready to unravel one of history’s strangest mysteries, pull up a chair. We’re going to need a magnifying glass and a very open mind.


Welcome to History Hidden™, where we dig up the stories that textbooks often skip. You’ve probably heard the phrase “green with envy,” but have you ever heard of children who were literally green? It sounds like a plot from a children’s book, but for centuries, this story has haunted historians, folklorists, and medical experts alike.

The tale of the Green Children of Woolpit is one of the most enduring mysteries in English folklore. First recorded in the 12th century, it tells of two children, a boy and a girl, who appeared in the village of Woolpit, Suffolk, during the reign of King Stephen (135–154). They had skin of a distinct verdant hue, spoke a language no one understood, and refused to eat anything but raw green beans.

“We are inhabitants of the land of St. Martin, who is regarded with peculiar veneration in the country which gave us birth.” — The Green Children, as recorded by Ralph of Cogeshall

But how did they get there? And why were they green? Was it a curse? A disease? Or a lost tribe of immigrants?

For a deeper dive into the original chronicles, you can read our dedicated article on the Green Children of Woolpit.

The Two Main Historical Accounts

The story comes to us primarily through two chroniclers: William of Newburgh (writing around 189) and Ralph of Cogeshall (writing around 120). While their accounts differ slightly in detail, the core narrative remains consistent.

  1. The Discovery: During harvest time, villagers found the children near a “wolf pit” (a trap for wolves). They were terrified, naked, and speaking a strange tongue.
  2. The Diet: They refused all food until they were given green beans (specifically, the pods, not the beans inside). Once they ate, they began to speak and slowly lost their green color.
  3. The Origin Story: Once they learned English, they claimed to come from the “Land of St. Martin,” a place where the sun never fully rose, only a perpetual twilight. They described a river separating their land from a “luminous country.”

Why the Confusion?

Historians have debated this for 80 years. The confusion arises because the story blends supernatural elements with plausible historical events.

  • The Supernatural View: They were elves, fairies, or creatures from the underworld.
  • The Historical View: They were human refugees, likely Flemish immigrants, suffering from severe malnutrition.

We’ll explore the medical and historical theories in depth, but first, let’s look at the science behind the color green.


Okay, let’s put on our lab coats. If you see a child with green skin today, you aren’t looking at a fairy tale; you’re looking at a medical symptom. The term “green” in historical contexts often referred to chlorosis, a condition that was common in the Middle Ages.

What is Chlorosis?

Chlorosis (from the Greek chloros, meaning “greenish-yellow”) was a term used in the 16th to 19th centuries to describe a form of iron-deficiency anemia that primarily affected young women and children. The skin took on a pale, yellowish-green tint due to a lack of hemoglobin.

  • Symptoms: Pale skin, fatigue, shortness of breath, and a greenish-yellow complexion.
  • Cause: Poor diet, lack of iron, and sometimes parasitic infections (like hookworm).
  • Treatment: Historically, “green sickness” was treated with iron supplements, a better diet, and fresh air.

In the case of the Woolpit children, if they were indeed malnourished refugees, their green skin could have been a visual manifestation of severe anemia. Once they were fed a proper diet (starting with the beans, which are rich in iron and folate), their skin color returned to normal.

Other Medical Causes of Green Skin

While chlorosis is the most likely historical explanation, modern medicine offers other possibilities:

Condition Cause Appearance Is it Permanent?
Chlorosis Iron-deficiency anemia Pale, yellowish-green ✅ Reversible with diet
Jaundice Liver issues, high bilirubin Yellow-green tint to skin/eyes ✅ Treatable
Cyanosis Lack of oxygen Blue-green tint to lips/skin ❌ Medical Emergency
Staining Food, dyes, chemicals Surface-level green ✅ Washes off
Argyria Silver exposure Blue-gray (can look greenish) ❌ Permanent

The “Green Bean” Connection

The children’s diet is a crucial clue. They ate green beans (pods) exclusively. In the Middle Ages, beans were a staple, but raw beans can be toxic. However, the key here is the nutrient content. Green beans are high in iron and vitamin C, which helps absorb iron. If the children were anemic, this diet would have been the perfect cure, explaining why their skin color normalized over time.

For more on historical diseases, check out our Folklore and Legends category, where we often discuss how medicine and myth intertwined.


Now, let’s leave the lab and enter the realm of mythology. The story of the Green Children is not unique; it fits into a broader tapestry of folklore involving “otherworldly” beings.

The Land of St. Martin

The children described their home as a place of perpetual twilight. This is a common motif in Celtic and Germanic folklore, where the “Otherworld” is often depicted as a land of eternal dusk or dawn, separated from the human world by a river or a hill.

  • The Luminous Country: They mentioned seeing a “luminous country” across a river. This could be a metaphor for heaven or the land of the dead.
  • The Wolf Pit: The fact that they appeared near a wolf pit is significant. In folklore, pits and holes are often gateways to the underworld.

Fairies, Elves, and the Green Man

The color green is deeply associated with fairies and nature spirits in European folklore.

  • The Green Man: A symbol of rebirth and nature, often depicted with leaves sprouting from his face.
  • Fairy Folk: In many tales, fairies are described as having green skin or wearing green clothes. They are often mischievous, capable of stealing children (changelings) or leading travelers astray.

The Green Children of Woolpit may have been a folkloric explanation for a real event. Perhaps a group of lost children was found, and the villagers, unable to explain their strange language and pallor, attributed their origin to the fairy realm.

Comparing to Other Legends

The Woolpit story isn’t the only one.

  • The Changeling: A child swapped by fairies for a human child.
  • The Green Knight: A character in Arthurian legend with green skin and a green axe.
  • The Little People: Various cultures have stories of small, green-skinned beings living in the hills.

For more on these mythical creatures, explore our Mythology Stories section.


Let’s get practical. If you’re a parent, you might be wondering: “Can my kid actually turn green from eating?” The answer is yes, but usually temporarily.

The Power of Pigments

Certain foods contain high levels of chlorophyll or artificial dyes that can stain the skin.

  1. Spinach and Leafy Greens: Eating massive amounts of spinach can cause a condition called carotenemia, where the skin turns yellow-orange. In rare cases, combined with other factors, it can look greenish.
  2. Artificial Dyes: Blue and yellow food dyes mixed together create green. If a child eats a lot of green candy, frosting, or drinks, their skin (especially the palms and soles) can turn green.
  3. Blueberries and Blackberries: These can stain the skin blue or purple, which might look greenish in certain lighting.

Real-World Examples

  • The “Green Baby” of 190s: There are anecdotal reports of babies turning green after consuming large amounts of green Jell-O or candy.
  • Medical Staining: Some medications, like chloroquine or rifampin, can cause skin discoloration.

How to Tell the Difference

  • Temporary Staining: Washes off with soap and water.
  • Medical Condition: Does not wash off. Often accompanied by other symptoms like fatigue, jaundice, or shortness of breath.

If you suspect your child has turned green due to diet, try washing the area. If the color persists, consult a doctor immediately.


This is the most important section for parents. How do you know if your child is just a “Smurf” from too much candy, or if they have a serious medical condition?

Jaundice: The Yellow-Green Warning

Jaundice is a condition where the skin and eyes turn yellow due to high levels of bilirubin. In severe cases, it can take on a greenish tint.

  • Symptoms: Yellow eyes, yellow skin, dark urine, pale stools.
  • Causes: Liver disease, hemolytic anemia, or blockage of the bile ducts.
  • Action: Seek medical attention immediately. Jaundice infants can be a sign of a serious condition.

Cyanosis: The Blue-Green Emergency

Cyanosis occurs when there is not enough oxygen in the blood. The skin turns blue, but in certain lighting or with certain skin tones, it can appear greenish.

  • Symptoms: Blue or green lips, fingertips, or skin. Difficulty breathing.
  • Action: Call 91 or go to the ER. This is a life-threatening emergency.

Chlorosis: The Historical “Green Sickness”

As mentioned earlier, chlorosis was a form of anemia.

  • Symptoms: Pale, greenish skin, fatigue, dizziness.
  • Action: A blood test can confirm anemia. Treatment usually involves iron supplements and dietary changes.

Quick Checklist for Parents

  • Wash the skin: If it comes off, it’s a stain.
  • Check the eyes: Yellow eyes = Jaundice (Doctor!).
  • Check breathing: Blue/green lips + trouble breathing = Emergency.
  • Check energy levels: Lethargy + green skin = Possible anemia.

If your child turns green and you are unsure why, follow these steps:

  1. Stay Calm: Panic won’t help.
  2. Assess the Situation:
  • Did they eat green candy?
  • Are they breathing normally?
  • Are their eyes yellow?
  1. Wash the Skin: Try to remove any potential stains.
  2. Call a Professional:
  • If the color persists or is accompanied by other symptoms, call your pediatrician.
  • If the child is having trouble breathing or is unresponsive, call emergency services.

The Role of History in Modern Medicine

It’s fascinating to think that the “Green Children” of Woolpit might have been suffering from anemia or malnutrition. In the Middle Ages, without modern medicine, these conditions were often misunderstood and attributed to magic. Today, we know the science, but the story remains a powerful reminder of how diet and health can change a person’s appearance.


Let’s look at the specific accounts that have kept this story alive for centuries.

The Account of William of Newburgh

William of Newburgh, a 12th-century English historian, wrote about the Green Children in his Historia Rerum Anglicarum. He described them as:

  • Skin Color: “Green as the color of a leaf.”
  • Language: “Incomprehensible” to the villagers.
  • Diet: “Refused all food except green beans.”

William was skeptical, calling the story “strange and unbelievable,” but he recorded it because it was so widely known.

The Account of Ralph of Cogeshall

Ralph of Cogeshall, a Cistercian monk, provided a more detailed account. He noted that:

  • The boy died shortly after arriving.
  • The girl, Agnes, survived and eventually lost her green color.
  • She learned English and married a local man.

Ralph’s account is considered more reliable because he lived closer to the time of the event and had access to local witnesses.

Modern Interpretations

In the 20th and 21st centuries, historians have re-examined these accounts. Some suggest the children were Flemish refugees fleeing persecution. The “Land of St. Martin” could be a reference to Flanders, where the cult of St. Martin was popular. The “twilight” might be a metaphor for the low light of the Flemish countryside or the darkness of their journey.


As historians and parents, we know that prevention is better than cure. Here are some tips to keep your children healthy and their skin color normal:

1. Balanced Diet

Ensure your children eat a variety of foods rich in iron, vitamin C, and folate.

  • Iron-rich foods: Spinach, red meat, beans, fortified cereals.
  • Vitamin C: Citrus fruits, strawberries, bell peppers (helps absorb iron).

2. Monitor Skin Color

Regularly check your child’s skin, especially if they have a history of anemia or liver issues.

  • Look for: Yellowing of the eyes, pale skin, or unusual discoloration.

3. Limit Artificial Dyes

While occasional green candy is fine, try to limit the intake of foods with artificial dyes.

  • Natural Alternatives: Use spinach powder or matcha for green color in recipes.

4. Stay Informed

Keep up with the latest medical advice. If you notice any changes in your child’s health, consult a doctor.

5. Embrace the Story

Use the story of the Green Children as a teaching tool. It’s a great way to introduce children to history, folklore, and science.


So, why were the children green? The answer is likely a blend of history, medicine, and myth. The most plausible explanation is that the Green Children of Woolpit were Flemish refugees suffering from severe anemia (chlorosis) and malnutrition. Their green skin was a symptom of their poor health, and their “otherworldly” origin story was a way for the villagers to make sense of a strange and frightening event.

The boy died, but the girl, Agnes, survived, recovered, and integrated into society. Her story is a testament to the resilience of the human spirit and the power of proper nutrition.

While the legend of the Green Children may never be fully solved, it remains a fascinating glimpse into the past. It reminds us that history is often stranger than fiction, and that even the most bizarre stories can have a basis in reality.

If you found this article helpful, don’t forget to share it with your friends and family. And if you have any questions or comments, feel free to leave them below!


If you want to learn more about the Green Children of Woolpit or explore related topics, check out these resources:

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What is the historical story behind the green children of Woolpit?

The story dates back to the 12th century in Woolpit, Suffolk. Two children with green skin appeared near a wolf pit, spoke an unknown language, and refused all food except green beans. They claimed to come from the “Land of St. Martin,” a place of perpetual twilight.

Did the green children of Woolpit actually exist?

There is no definitive proof that the children existed as described. However, the story was recorded by two reputable historians, William of Newburgh and Ralph of Cogeshall, suggesting it was based on a real event, possibly involving Flemish refugees.

What caused the skin of the green children to turn green?

The most likely cause is chlorosis, a form of iron-deficiency anemia. Their green skin was a symptom of malnutrition, which resolved once they were fed a proper diet.

Where did the green children of Woolpit come from?

According to the legend, they came from the “Land of St. Martin.” Historians believe this may have been a reference to Flanders, where the children were likely refugees fleeing persecution.

Are there other recorded cases of children with green skin in history?

There are no other well-documented cases of children with naturally green skin. However, the term “green sickness” (chlorosis) was used to describe anemia in the Middle Ages, which could cause a greenish tint to the skin.

What happened to the green children after they arrived in Woolpit?

The boy died shortly after arriving. The girl, Agnes, survived, learned English, lost her green color, and eventually married a local archdeacon.

How does the legend of the green children relate to medieval folklore?

The legend fits into the broader tradition of fairy tales and mythology, where otherworldly beings often appear in human form. The story reflects the medieval belief in the existence of a hidden, magical world.

Why do some historians think the children were Flemish?

Flemish immigrants were persecuted in England during the 12th century. The children’s inability to speak English and their strange appearance could be explained by their status as refuges suffering from malnutrition.

Could the green skin have been caused by a disease?

Yes, chlorosis (anemia) is the most likely medical explanation. Other possibilities include jaundice or cyanosis, but these would have been accompanied by other severe symptoms.

Is there any scientific evidence for the “Land of St. Martin”?

No, there is no scientific evidence for a physical “Land of St. Martin.” The description of a place with perpetual twilight is likely a metaphor for the children’s homeland or a reference to the underworld in folklore.


Jacob
Jacob

As the editor, Jacob leads History Hidden’s experienced research and writing team, as their research separates legend from evidence and brings the past’s biggest mysteries to life. Jacob's experience as both a professional magician and engineer helps him separate the fact from fiction, and unmask the truth. Under their direction, the team of historians explores lost civilizations, folklore and cryptids, biblical mysteries, pirates’ hoards, ancient artifacts, and long-standing historical puzzles—always with engaging narratives grounded in careful sourcing.

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