During the fight between Eleanor's guard and the jail-keep, her guard pushes the jail-keep against the wall, knocking the sword out of his hand. When the jail-keep draws his knife, Eleanor's guard is against the wall.
For a moment Eleanor appears in front of Henry and Alais. Then she puts her hands one on the other, about her breast, and says to Henry she wants to watch him to kiss Alais. In the following shot her hands had changed position.
After Henry asks for an annulment from Eleanor, he gets up from his chair, crosses the room, and leans forward against a stone pillar. When Eleanor follows him in the next shot, as she draws closer to him, he is standing in the middle of the room, nowhere near a pillar.
After John goes out of the room, Eleanor stands up and talks to Geoffrey gesticulating with her right hand about her neck. Next shot her right hand is lower, about her belly.
During Philip's first negotiations with Henry, the goblet Eleanor holds switches hands in two consecutive shots.
At one point Eleanor states that the year is 1183. At another point Henry II claims "I'm 50 now! Good God, boy. I'm the oldest man I know. I've got a decade on the Pope!" However, the pope in 1183 was Lucius III who was born in Lucca Italy in 1097. Henry II was born on 5 March 1133, making him 36 years younger than the pope.
Henry kept Christmas Court in 1183 at Le Mans (where he was born) with John, not at Chinon. The big family Christmas gathering alluded to in the film took place in 1184 at Windsor: Henry, Eleanor, their daughter Matilda with her husband and children, Richard, and John.
Henry has Eleanor returned to confinement. In fact, he released her in 1183, the final request of their son, Young Henry, who died that June after his rebellion against Henry failed (Young Henry and Geoffrey fought against Richard, who fought for Henry while all 3 sons were egged on by Eleanor). Eleanor traveled to Windsor under guard in 1184 to join the court for Christmas and was under confinement when Henry died in 1189. One of Richard's first acts when he became king was to release his mother.
King Philip was never a guest of King Henry's at Christmas Court.
Henry compares his situation to that of King Lear. Although Shakespeare published "King Lear" in 1605, it was based on the legend of Leir of Britain as recounted by Geoffrey of Monmouth, who was alive in Henry's day.
During the battle at the beginning of the movie, the second group of ambushing mounted warriors charge onto the beach from their hiding place in the rocks. Although it is supposed to be a surprise attack, the pathway from the hiding place to the battle, on otherwise pristine sand, is visible from previous takes.
The boards in the fireplace of Henry's bedroom are the same throughout the film.
Henry breaks the ice the in bowl of water in his bedroom, yet we don't see his breath.
When Eleanor lights a torch and steps down the stairs followed by a guard, the torch shadow projects on the guard and, after, on the wall on the left. It is supposed to be the only light came from the torch.
Christmas trees were a somewhat obscure German tradition, introduced to the British royal family, and, by extension, England, by Queen Charlotte. It was not commonly decorated in English homes until the introduction of this custom by Prince Albert. Even the concept of using glass balls was unknown to Germans until long after the 12th century.
Eleanor refers to syphilis in 1183, although the first recorded outbreak was in 1494. The term 'syphilis' wasn't coined until 1530.
The chanson that Alais sings as Henry spars with John, "Allons Gay Bergères", was written by composer Guillaume Costeley circa 1570.
Henry asks Alais rhetorically "Has my willow become poison oak?" Poison Oak is native to North America, which Europeans at the time didn't know existed.
Henry refers to the royal sons in the wine cellar as aging with the royal port. Although acidic Portuguese wines were introduced into England in the 12th Century, port wine was introduced there 500 years later.
Wake from the boat carrying the camera and crew visible when Eleanor is being ferried to Henry's castle.
Henry's subjects in the courtyard ignore him and the other members of the Royal Family.
As Richard, Geoffrey, and John search for a way out of the cellar, they fail to notice the open "windows" as they walk past.