How a Birthday Party at Chinon Kickstarted a Civil War (5 March 1173)

Today is my birthday 😁. And as birthdays go, I could have shared mine with worse people, because 5 March 1133 was also the birthday of Henry II of England, born at Le Mans, one of the most formidable rulers medieval Europe ever produced.

Henry II’s Birthday was 5th March

Soldier, lawgiver, empire-builder, father of eight legitimate children (and countless illegitimate ones), and a man whose family would become both his greatest weapon, his biggest headache, and eventually most spectacular downfall.

Which makes today a good day to talk about what happened on his fortieth birthday, in 1173. Because that evening a feast was held at Château de Chinon. The great hall would have been ablaze with candlelight and Henry, thinking he’d managed to control his spoiled, entitled (but courteous and generous) namesake son, allowed the goblets to be repeatedly refilled by his son’s own hand.

The drunkenness that followed led to everything that followed: the Great Rebellion, where Henry’s family were torn apart, and his throne would never feel secure again.

This event, and the Great Rebellion itself, runs through the heart of my novel Lady of Lincoln.

The Birthday

Chinon Castle

Château de Chinon, perched high above the River Vienne, with long curtain walls and towers dominating the Loire Valley landscape, was no ordinary residence. It was a stronghold that served as one of centres of the entire Angevin world.

Medieval kings didn't celebrate birthdays the way we do. But significant dates were marked with feasting, generosity, and displays of royal magnificence. The great hall would have glowed with beeswax candles and bright hangings. The tables would have groaned under roasted meats they’d hunted or captured in the days before: venison, boar, and swan, all alongside strong spiced wine and hippocras. Minstrels would have played on the lute, the vielle, the pipe and tabor. The king would have sat at the centre at the high table on the dais, the picture of authority at its zenith.

A Royal Feast

Medieval Minstrels

He didn’t have a clue…

The chronicler Ralph de Diceto tells us what happened next. it was the ‘Young King’ (Henry’s son Henry - who I refer to as Harry in Lady of Lincoln - was crowned in his father’s lifetime to secure the succession) who personally ensured his father and the entire household drank deeply that night.

And then young Harry, who had regulated his drinking, sneaked out when everyone was sleeping it all off.

A Crown Without Power

The Young King being served by his father at his coronation

To understand why his son (and the other teenage sons) was unhappy, you have to understand the trap Henry II had built for himself. In 1170, he had his eldest son crowned during his own lifetime, a dramatic move designed to secure the succession beyond all doubt. The boy was styled rex iunior - the Young King - and crowned again in 1172 alongside his wife, Margaret of France. He had the title, and he’d had the ceremony and the pageantry, but he didn’t have any actual power.

Henry II was a control freak (and probably for good reason), keeping the treasury, the castles, the administration of justice, and control of the Angevin continental dominions firmly in his own hands. His son had a glittering court and a borrowed crown, but no revenues, no territory, no authority to govern so much as a single manor. Meanwhile, his brothers Richard and Geoffrey were being assigned real, defined territories: Aquitaine and Brittany respectively. And Louis VII of France, the Young King's father-in-law, was whispering in his ear, eager as ever to fracture Angevin power wherever he could find a crack.

The Young King (who never became a real king) comes over as a spoiled spendthrift. He was known for his courtesy and generosity, but I imagine Henry II thought he wasn’t ready to rule. Perhaps that was a mistake - but we’ll never know. And a crowned king with no kingdom to rule was not just frustrated: he felt humiliated.

The Rebellion That Shook an Empire

The Angevin Empire under Henry II

In the early hours of the following morning, the young ‘king’ sneaked out of the Castle, riding hard for the French court and the protection of Louis VII. What followed was not a minor baronial squabble but a coordinated uprising that erupted simultaneously across England, Normandy, Anjou, Aquitaine, and Brittany. Richard and Geoffrey joined their brother. Disaffected barons (including Nicola de la Haye’s husband) on both sides of the Narrow Sea (now known as the English Channel) rose in support. And Eleanor of Aquitaine - Henry's own queen - was arrested attempting to slip away and join her sons. We’ll never know exactly why Eleanor rebelled, but Henry would never forgive her.

This all-out rebellion was the gravest threat Henry II ever faced. And it had ignited, with horrible irony, with his own birthday celebrations.

But Henry survived it. He crushed the rebellion, imprisoned Eleanor, and reasserted his authority with characteristic ferocity. But something had broken that could not be mended. He would fight his sons in some shape or form for the rest of his life. The man who had rebuilt England after the chaos of Stephen's reign, who had reformed its laws and stretched his empire to the Pyrenees, could never quite master his own household.

I can almost feel sorry for him. He clearly tried to do right by his sons, finding them each an inheritance. But these princelings were spoiled and self-important.

I say I can almost feel sorry for him. He was a sound king in many ways, but at least one of his teenage female wards bore his illegitimate child. There are too many stories that suggest he took women whether they liked it or not and expected them to be grateful. So my sympathy only goes too far.

Back to the Great Rebellion, and the irony that a king, who’d pulled together such a great empire, made the greatest political miscalculation of his extraordinary reign not through battle, a treaty, or even the murder of Thomas Becket, but that he raised his sons to be kings, then refused to let them rule.

Nicola de la Haye’s World was Torn Apart

I've always been drawn to the real stories behind medieval history - not just the kings and their quarrels, but the people caught in the wreckage. The birthday feast at Chinon is one of those moments: a father at the height of his power, a son crowned but powerless, pouring wine with a smile, and a raucous, outwardly joyous feast masking the bitterness of a broken family.

But the shockwaves from that night didn't stop at the walls of Chinon. They rolled outward across the whole of Henry's realm, and for Nicola de la Haye, they struck at the very heart of everything she had.

Her husband joined the rebels, and Nicola's world almost collapsted. Everything she held: her lands, her castle, her position, her future, was suddenly forfeit, dependent on which way the rebellion fell. And it wasn't only her own survival at stake. The tenants who farmed her lands, the villagers who lived under her protection, the garrison who’d sworn their service to her, all of them stood in the shadow of the same threat. If Nicola fell, they fell with her.

This is the story that runs through Lady of Lincoln: not just a rebellion of kings and princes, but the impossible position of a woman who had to hold everything together when the man beside her had chosen to defy the king and join a war.

But Nicola, still young, would one day become one of the greatest women of medieval England. Read Lady of Lincoln and see how a strong women, in a world where powerful men played at war without regard for the consequences, would cope.

If you haven't yet met Nicola de la Haye, today feels like exactly the right day to introduce you. Lady of Lincoln is available here.

Lady of Lincoln is available in paperback, ebook, and audio.